The document defines integers and provides rules for adding and subtracting integers:
- Integers include all positive whole numbers and their opposites, including zero.
- For addition, if signs are the same, add the numbers and keep the sign; if different, subtract the smaller number from the larger and keep the sign of the number with the larger absolute value.
- For subtraction, change a negative number to its positive equivalent by changing the sign, then add. This allows subtraction to follow the same rules as addition.
Powerpoint presentation about Division of Integers. Best for demo teaching. Designed for an online class and face-to-face with review, motivation, groupings, quiz, and homework.
This tutorial provides fundamental concepts such as:
- Absolute Values
- Basic Operations with Signed Numbers
- PEMDAS rule
in order to properly handle simplification of mathematical expressions.
6.EE.A.1 Write and evaluate numerical expressions involving whole-number exponents.
Objective: Students will understand that the order of operations can be used to evaluate numerical expressions.
Key words
numerical expression
order of operations
Powerpoint presentation about Division of Integers. Best for demo teaching. Designed for an online class and face-to-face with review, motivation, groupings, quiz, and homework.
This tutorial provides fundamental concepts such as:
- Absolute Values
- Basic Operations with Signed Numbers
- PEMDAS rule
in order to properly handle simplification of mathematical expressions.
6.EE.A.1 Write and evaluate numerical expressions involving whole-number exponents.
Objective: Students will understand that the order of operations can be used to evaluate numerical expressions.
Key words
numerical expression
order of operations
This presentation is based on CCSS.Math.Content.5.OA.A.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
CCSS.Math.Content.5.OA.A.2 Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product
This presentation is based on CCSS.Math.Content.5.OA.A.1 Use parentheses, brackets, or braces in numerical expressions, and evaluate expressions with these symbols.
CCSS.Math.Content.5.OA.A.2 Write simple expressions that record calculations with numbers, and interpret numerical expressions without evaluating them. For example, express the calculation “add 8 and 7, then multiply by 2” as 2 × (8 + 7). Recognize that 3 × (18932 + 921) is three times as large as 18932 + 921, without having to calculate the indicated sum or product
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The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
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unwillingness to rectify this violation through action requires accountability.
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2. Some definitions related to integers.
Rules for adding and subtracting integers.
Different methods that will work for you.
Are you ready??
Add with negative integers
Subtract positive integers from negative integers
10. If you don’t see a
negative or positive sign
in front of a number it is
positive.
9+
11. Rule #1 – If the signs are the same,
pretend the signs aren’t there.
Add the numbers and then put the
sign of the addends in front of
your answer.
9 + 5 = 14
-9 + -5 = -14
12. Rule #2 – If the signs are different
pretend the signs aren’t there.
Subtract the smaller from the larger
one and put the sign of the one with
the larger absolute value in front of
your answer.
-9 + +5 =
9 - 5 = 4
Larger abs. value
Answer = - 4
13. Integer Subtraction Rule
Subtracting a negative number is the
same as adding a positive. Change
the signs and add.
2 – (-7)
is the same as
2 + (+7)
2 + 7 = 9
14. -2 – (+7)
is the same as
-2 + (-7)
-2 + -7 = -9
Let’s try another
15. 2 – (+7)
is the same as
2 + (-7)
2 + -7 = -5
One more…
16. 0 1 2 3 4 5 6-1-2-3-4-5-6
I like to call this,
“Stand – Turn – Walk”
Or STW
+-
17. 0 1 2 3 4 5 6-1-2-3-4-5-6
Stand at the first integer.
If the problem is -
+-
-2 + (3)
Stand at -2
18.
19. Since the (3) is positive, you will walk forward
from the -2 three spaces. The number you
stop on is your answer. The answer is
positive 1.
-2 + (3) = 1
20. You have learned lots of things
About adding and subtracting
Integers. Let’s review!
21. Rule #1 – If the signs are the same,
pretend the signs aren’t there.
Add the numbers and then put the
sign of the addends in front of
your answer.
9 + 5 = 14
-9 + -5 = -14
22. Rule #2 – If the signs are different pretend the
signs aren’t there. Subtract the smaller from
the larger one and put the sign of the one with
the larger absolute value in front of your
answer.
-9 + +5 =
9 - 5 = 4
Larger abs. value
Answer = - 4
26. Keep the sign of the higher number
Then you’ll be exact
27. Same signs add and keep
Different signs subtract
Keep the sign of the higher number
Then you’ll be exact
28. Integer Subtraction Rule
Subtracting a negative number is the
same as adding a positive. Change
the signs and add.
2 – (-7)
is the same as
2 + (+7)
2 + 7 = 9!
31. Same signs add and keep
Different signs subtract
Keep the sign of the higher number
Then you’ll be exact
32. Change the minus to a plus
Change the sign of next
Then all you do is add them up
As if they were a plus
33. Same signs add and keep
Different signs subtract
Keep the sign of the higher number
Then you’ll be exact
Change the minus to a plus
Change the sign of the next
Then all you do is add them up
As if they were a plus