The document discusses various tests for determining if a number is divisible by certain other numbers based on the digits of the number. Test I examines divisibility by 3 and 9 using the digit sum or digit root of the number. If the digit sum or root is divisible by 3 or 9, then the original number is also divisible. Test II examines divisibility by 2, 4, and 8 based on the last digit(s) of the number - if the last digit is even, it's divisible by 2; if the last 2 digits are divisible by 4, it's divisible by 4; and if the last 3 digits are divisible by 8, it's divisible by 8. Examples are provided to illustrate the application of these tests.
a sample of the 4th Grade Math Book by Jessica Corriere and Robert Richards
The best 4th grade study guide to prepare your student for mathematic exams. The book teaches children to understand basic math concepts, skills, and strategies of the California Common Core Curriculum Standards with detailed step by step explanations to solving typical exam problems. It's like studying with your own private tutor! This book features a user friendly format perfect for browsing, research, and review. Three practice test and answer keys included; covering review topics: Number Sense, Algebra, Geometry, Measurement, Probability and Statistics. All content aligned to state and national standards.
a sample of the 4th Grade Math Book by Jessica Corriere and Robert Richards
The best 4th grade study guide to prepare your student for mathematic exams. The book teaches children to understand basic math concepts, skills, and strategies of the California Common Core Curriculum Standards with detailed step by step explanations to solving typical exam problems. It's like studying with your own private tutor! This book features a user friendly format perfect for browsing, research, and review. Three practice test and answer keys included; covering review topics: Number Sense, Algebra, Geometry, Measurement, Probability and Statistics. All content aligned to state and national standards.
Mathemagic is inspired from Vedic Mathematics and Smart Maths to develope a passion for quantitative section of various entrance exams especially for those who belongs to non mathematic streams.
A riddle is a statement or question having a double or veiled meaning, put forth as a puzzle to be solved. Riddles is a speech play. It is one of the minor genres of folk literature.
Mathemagic is inspired from Vedic Mathematics and Smart Maths to develope a passion for quantitative section of various entrance exams especially for those who belongs to non mathematic streams.
A riddle is a statement or question having a double or veiled meaning, put forth as a puzzle to be solved. Riddles is a speech play. It is one of the minor genres of folk literature.
1 To 20 Divisibility Rules in Mathematics.pdfChloe Cheney
Learn 1 – 20 divisibility rules of math to determine if a number is completely divisible or not. Practice the given example questions to solve lengthy calculations within seconds.
Preparing for KS3- Probability, Formulae and Equations, Ratio and Proportion,...torixD
Includes the following subjects: Probability, Formulae and Equations, Ratio and Proportion, Fractions of Quantities and Percentages of Quantities. As well as a short film and some interesting games. This is perfect for consolidating KS2 tricky bits and getting ready for KS3.
Tips to prepare for Fundamentals of Quantitative Aptitude
Number Properties
LCM, HCF
Divisibility
Fractions & Decimals,
square
Square Roots
cyclicity
with shortcut tricks
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
Slack (or Teams) Automation for Bonterra Impact Management (fka Social Soluti...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on the notifications, alerts, and approval requests using Slack for Bonterra Impact Management. The solutions covered in this webinar can also be deployed for Microsoft Teams.
Interested in deploying notification automations for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Ramesh Iyer
In today's fast-changing business world, Companies that adapt and embrace new ideas often need help to keep up with the competition. However, fostering a culture of innovation takes much work. It takes vision, leadership and willingness to take risks in the right proportion. Sachin Dev Duggal, co-founder of Builder.ai, has perfected the art of this balance, creating a company culture where creativity and growth are nurtured at each stage.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Search and Society: Reimagining Information Access for Radical Futures
1 f6 some facts about the disvisibility of numbers
1. We start out with a simple mathematics procedure that is often
used in real live.
Some Facts About Divisibility
2. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum.
Some Facts About Divisibility
3. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
Some Facts About Divisibility
4. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3,
Some Facts About Divisibility
5. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100.
Some Facts About Divisibility
7. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
7 8 9 1 8 2 7 3
8. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15
9. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15 30
10. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15 30
add
45
11. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15 30
add
45
Hence the digit sum of 78999111 is 45.
12. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15 30
add
45
Hence the digit sum of 78999111 is 45.
If we keep adding the digits, the sums eventually become a
single digit sum – the digit root.
9
13. We start out with a simple mathematics procedure that is often
used in real live. It’s called the digit sum. Just as its name
suggests, we sum all the digits in a number.
The digit sum of 12 is 1 + 2 = 3, is the same as the digit sum
of 21, 111, or 11100. To find the digit sum of
Some Facts About Divisibility
add 7 8 9 1 8 2 7 3
15 30
add
45
Hence the digit sum of 78999111 is 45.
If we keep adding the digits, the sums eventually become a
single digit sum – the digit root.
The digit root of 78198273 is 9.
9
14. A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids?
Some Facts About Divisibility
15. A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short.
Some Facts About Divisibility
16. A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids?
Some Facts About Divisibility
17. A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
Some Facts About Divisibility
18. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
Some Facts About Divisibility
19. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
Some Facts About Divisibility
20. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
Some Facts About Divisibility
21. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
For example 12, 111, 101010 and 300100200111 all have
digit sums that may be divided by 3,
Some Facts About Divisibility
22. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
For example 12, 111, 101010 and 300100200111 all have
digit sums that may be divided by 3, therefore all of them may
be divided by 3 evenly.
Some Facts About Divisibility
23. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
For example 12, 111, 101010 and 300100200111 all have
digit sums that may be divided by 3, therefore all of them may
be divided by 3 evenly. However only 3001002000111, whose
digit sum is 9,
Some Facts About Divisibility
24. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
For example 12, 111, 101010 and 300100200111 all have
digit sums that may be divided by 3, therefore all of them may
be divided by 3 evenly. However only 3001002000111, whose
digit sum is 9, may be divided evenly by 9.
Some Facts About Divisibility
25. One simple application of the digit sum is to check if a number
may be divided completely by numbers such as 9, 12, or 18.
I. The Digit Sum Test for Divisibility by 3 and 9.
A bag contains 384 pieces of chocolate, can they be evenly
divided by 12 kids? In mathematics, we ask “is 384 divisible
by 12?” for short. How about 2,349,876,543,214 pieces of
chocolate with 18 kids? Is 2,349,876,543,214 divisible by 18?
If the digit sum or digit root of a number may be divided by 3
(or 9) then the number itself maybe divided by 3 (or 9).
For example 12, 111, 101010 and 300100200111 all have
digit sums that may be divided by 3, therefore all of them may
be divided by 3 evenly. However only 3001002000111, whose
digit sum is 9, may be divided evenly by 9.
Example A. Identify which of the following numbers are
divisible by 3 and which are divisible by 9 by inspection.
a. 2345 b. 356004 c. 6312 d. 870480
Some Facts About Divisibility
26. We refer the above digit–sum check for 3 and 9 as test I.
Some Facts About Divisibility
27. We refer the above digit–sum check for 3 and 9 as test I.
We continue with test II and III.
Some Facts About Divisibility
28. II. The Test for Divisibility by 2, 4, and 8
We refer the above digit–sum check for 3 and 9 as test I.
We continue with test II and III.
Some Facts About Divisibility
29. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
We continue with test II and III.
Some Facts About Divisibility
30. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
31. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
32. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
33. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
34. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8,
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
35. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8, but ****820 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
We continue with test II and III.
Some Facts About Divisibility
36. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8, but ****820 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
III. The Test for Divisibility by 5
We continue with test II and III.
Some Facts About Divisibility
37. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8, but ****820 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
III. The Test for Divisibility by 5.
A number is divisible by 5 if its last digit is 5 or 0.
We continue with test II and III.
Some Facts About Divisibility
38. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8, but ****820 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
III. The Test for Divisibility by 5.
A number is divisible by 5 if its last digit is 5 or 0.
From the above checks, we get the following checks for
important numbers such as 6, 12, 15, 18, 36, etc..
We continue with test II and III.
Some Facts About Divisibility
39. II. The Test for Divisibility by 2, 4, and 8
A number is divisible by 2 if its last digit is even.
We refer the above digit–sum check for 3 and 9 as test I.
Hence ****32 is divisible by 4 but ****42 is not.
A number is divisible by 8 if its last 3 digits is divisible by 8.
Hence ****880 is divisible by 8, but ****820 is not.
A number is divisible by 4 if its last 2 digits is divisible by 4 –
you may ignore all the digits in front of them.
III. The Test for Divisibility by 5.
A number is divisible by 5 if its last digit is 5 or 0.
From the above checks, we get the following checks for
important numbers such as 6, 12, 15, 18, 36, etc..
The idea is to do multiple checks on any given numbers.
We continue with test II and III.
Some Facts About Divisibility
41. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
Some Facts About Divisibility
42. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
Some Facts About Divisibility
43. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Some Facts About Divisibility
44. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6.
Some Facts About Divisibility
45. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Some Facts About Divisibility
46. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
Some Facts About Divisibility
47. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Some Facts About Divisibility
48. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Its last two digits are 84 which is divisible by 4.
Some Facts About Divisibility
49. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Its last two digits are 84 which is divisible by 4. Hence 384 is
divisible by 3 * 4 or 12.
Some Facts About Divisibility
50. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Its last two digits are 84 which is divisible by 4. Hence 384 is
divisible by 3 * 4 or 12.
For 2,349,876,543,210 for 18, since it's divisible by 2, we only
have to test divisibility for 9.
Some Facts About Divisibility
51. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Its last two digits are 84 which is divisible by 4. Hence 384 is
divisible by 3 * 4 or 12.
Some Facts About Divisibility
For 2,349,876,543,210 for 18, since it's divisible by 2, we only
have to test divisibility for 9. Instead of actually find the digit
sum, let’s cross out the digits sum to multiple of 9.
52. The Multiple Checks Principle
If a number passes two different of tests I, II, or III, then it’s
divisible by the product of the numbers tested.
The number 102 is divisible by 3-via the digit sum test.
It is divisible by 2 because the last digit is even.
Hence 102 is divisible by 2*3 = 6 (102 = 6 *17).
Example B. A bag contains 384 pieces of chocolate, can they
be evenly divided by 12 kids? How about 2,349,876,543,214
pieces of chocolate with 18 kids?
For 384 its digit sum is 15 so it’s divisible by 3 (but not 9).
Its last two digits are 84 which is divisible by 4. Hence 384 is
divisible by 3 * 4 or 12.
Some Facts About Divisibility
For 2,349,876,543,210 for 18, since it's divisible by 2, we only
have to test divisibility for 9. Instead of actually find the digit
sum, let’s cross out the digits sum to multiple of 9. We see
that it’s divisible by 9, hence it’s divisible by 18.
53. Ex. Check each for divisibility by 3 or 6 by inspection.
1. 106 2. 204 3. 402 4. 1134 5. 11340
Check each for divisibility by 4 or 8 by inspection.
6. 116 7. 2040 8. 4020 9. 1096 10. 101340
11. Which numbers in problems 1 – 10 are divisible by 9?
Some Facts About Divisibility
12. Which numbers in problems 1 – 10 are divisible by 12?
13. Which numbers in problems 1 – 10 are divisible by 18?