SlideShare a Scribd company logo
Learning Target:Students will learn how to evaluate expression using order of operations.
Who can give us the steps in making a peanut butter and jelly sandwich?
PEMDAS() : Parenthesis - (fraction Bar)e : Exponentsx : Multiplication  ÷ : Division + : Addition – : Subtraction
Multiplication and Division:Left to Right in the problem (not in PEMDAS)Addition and Subtraction:Left to Right in the problem(not in PEMDAS)
Examples:24 – 8 X 2 + 94 X ( 6 – 1)6 + 1 X 5 squared2 + 189 - 4
Can you evaluate expression using order of operations?

More Related Content

What's hot

Primary PGCE pre-course day Maths presentation
Primary PGCE pre-course day Maths presentationPrimary PGCE pre-course day Maths presentation
Primary PGCE pre-course day Maths presentation
hullpgce
 
Addition of negative numbers
Addition of negative numbersAddition of negative numbers
Addition of negative numbers
mathsvidhya2014
 
Alg lesson 13
Alg lesson 13Alg lesson 13
Alg lesson 13
sphelps25
 
Proj 8 Tanya Graded
Proj 8 Tanya GradedProj 8 Tanya Graded
Proj 8 Tanya Graded
tanyaahogan
 
Writingonestepequations
WritingonestepequationsWritingonestepequations
Writingonestepequations
topherharrisonprice
 
Lesson 3 test taking strategies
Lesson 3 test taking strategiesLesson 3 test taking strategies
Lesson 3 test taking strategies
smileydj
 
October 5
October 5October 5
October 5
khyps13
 
Day 15 two step inequalities
Day 15 two step inequalitiesDay 15 two step inequalities
Day 15 two step inequalities
Erik Tjersland
 
5. multiplying 2 to 4 digit numbers by 1-to 2-digit
5. multiplying 2 to 4 digit numbers by 1-to 2-digit5. multiplying 2 to 4 digit numbers by 1-to 2-digit
5. multiplying 2 to 4 digit numbers by 1-to 2-digit
Annie Villamer
 
Brochure - Click Thru Outstanding Maths Lessons - Year 6
Brochure - Click Thru Outstanding Maths Lessons - Year 6Brochure - Click Thru Outstanding Maths Lessons - Year 6
Brochure - Click Thru Outstanding Maths Lessons - Year 6
Neil Barber
 
Number patterns
Number patternsNumber patterns
Number patterns
HGI School
 
Math 6 [Division of Integers] ppt Q2 W9
Math 6 [Division of Integers] ppt Q2 W9Math 6 [Division of Integers] ppt Q2 W9
Math 6 [Division of Integers] ppt Q2 W9
Rigino Macunay Jr.
 
Intersections and inequalities day 4
Intersections and inequalities day 4Intersections and inequalities day 4
Intersections and inequalities day 4
cirilah
 
Grade 2 addition and subtraction
Grade 2 addition and subtractionGrade 2 addition and subtraction
Grade 2 addition and subtraction
susan70
 
6. multiplying 2 to 4-digit numbers by multiplies of 10
6. multiplying 2 to 4-digit numbers by multiplies of 106. multiplying 2 to 4-digit numbers by multiplies of 10
6. multiplying 2 to 4-digit numbers by multiplies of 10
Annie Villamer
 
4-Cm12 15-16
4-Cm12 15-164-Cm12 15-16
4-Cm12 15-16
mjollymathome
 
Pie chart - qualitative aptitude
Pie chart - qualitative aptitude Pie chart - qualitative aptitude
Pie chart - qualitative aptitude
Surya Swaroop
 
Calculations karina
Calculations karinaCalculations karina
Calculations karina
Karina Moreno Verpeide
 
8th gr lesson 9
8th gr lesson 98th gr lesson 9
8th gr lesson 9
sphelps25
 

What's hot (19)

Primary PGCE pre-course day Maths presentation
Primary PGCE pre-course day Maths presentationPrimary PGCE pre-course day Maths presentation
Primary PGCE pre-course day Maths presentation
 
Addition of negative numbers
Addition of negative numbersAddition of negative numbers
Addition of negative numbers
 
Alg lesson 13
Alg lesson 13Alg lesson 13
Alg lesson 13
 
Proj 8 Tanya Graded
Proj 8 Tanya GradedProj 8 Tanya Graded
Proj 8 Tanya Graded
 
Writingonestepequations
WritingonestepequationsWritingonestepequations
Writingonestepequations
 
Lesson 3 test taking strategies
Lesson 3 test taking strategiesLesson 3 test taking strategies
Lesson 3 test taking strategies
 
October 5
October 5October 5
October 5
 
Day 15 two step inequalities
Day 15 two step inequalitiesDay 15 two step inequalities
Day 15 two step inequalities
 
5. multiplying 2 to 4 digit numbers by 1-to 2-digit
5. multiplying 2 to 4 digit numbers by 1-to 2-digit5. multiplying 2 to 4 digit numbers by 1-to 2-digit
5. multiplying 2 to 4 digit numbers by 1-to 2-digit
 
Brochure - Click Thru Outstanding Maths Lessons - Year 6
Brochure - Click Thru Outstanding Maths Lessons - Year 6Brochure - Click Thru Outstanding Maths Lessons - Year 6
Brochure - Click Thru Outstanding Maths Lessons - Year 6
 
Number patterns
Number patternsNumber patterns
Number patterns
 
Math 6 [Division of Integers] ppt Q2 W9
Math 6 [Division of Integers] ppt Q2 W9Math 6 [Division of Integers] ppt Q2 W9
Math 6 [Division of Integers] ppt Q2 W9
 
Intersections and inequalities day 4
Intersections and inequalities day 4Intersections and inequalities day 4
Intersections and inequalities day 4
 
Grade 2 addition and subtraction
Grade 2 addition and subtractionGrade 2 addition and subtraction
Grade 2 addition and subtraction
 
6. multiplying 2 to 4-digit numbers by multiplies of 10
6. multiplying 2 to 4-digit numbers by multiplies of 106. multiplying 2 to 4-digit numbers by multiplies of 10
6. multiplying 2 to 4-digit numbers by multiplies of 10
 
4-Cm12 15-16
4-Cm12 15-164-Cm12 15-16
4-Cm12 15-16
 
Pie chart - qualitative aptitude
Pie chart - qualitative aptitude Pie chart - qualitative aptitude
Pie chart - qualitative aptitude
 
Calculations karina
Calculations karinaCalculations karina
Calculations karina
 
8th gr lesson 9
8th gr lesson 98th gr lesson 9
8th gr lesson 9
 

Viewers also liked

2.4 multiplication of real numbers 2
2.4 multiplication of real numbers 22.4 multiplication of real numbers 2
2.4 multiplication of real numbers 2
bweldon
 
8.1 angles 2
8.1 angles 28.1 angles 2
8.1 angles 2
bweldon
 
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
Mark Morley, MBA
 
2.5 apply the distributive property day 3
2.5 apply the distributive property   day 32.5 apply the distributive property   day 3
2.5 apply the distributive property day 3
bweldon
 
Sec. 1.5 variablers and expressions
Sec. 1.5 variablers and expressionsSec. 1.5 variablers and expressions
Sec. 1.5 variablers and expressions
bweldon
 
3.1 solve one step equations - day 1
3.1 solve one step equations - day 13.1 solve one step equations - day 1
3.1 solve one step equations - day 1
bweldon
 
Updated sec. 5.4
Updated sec. 5.4Updated sec. 5.4
Updated sec. 5.4
bweldon
 

Viewers also liked (7)

2.4 multiplication of real numbers 2
2.4 multiplication of real numbers 22.4 multiplication of real numbers 2
2.4 multiplication of real numbers 2
 
8.1 angles 2
8.1 angles 28.1 angles 2
8.1 angles 2
 
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
Business Computing Online - Top 5 Considerations for Deploying a Cloud Integr...
 
2.5 apply the distributive property day 3
2.5 apply the distributive property   day 32.5 apply the distributive property   day 3
2.5 apply the distributive property day 3
 
Sec. 1.5 variablers and expressions
Sec. 1.5 variablers and expressionsSec. 1.5 variablers and expressions
Sec. 1.5 variablers and expressions
 
3.1 solve one step equations - day 1
3.1 solve one step equations - day 13.1 solve one step equations - day 1
3.1 solve one step equations - day 1
 
Updated sec. 5.4
Updated sec. 5.4Updated sec. 5.4
Updated sec. 5.4
 

More from bweldon

What shape is your name
What shape is your nameWhat shape is your name
What shape is your name
bweldon
 
FM HS Girls Summer Schedule
FM HS Girls Summer ScheduleFM HS Girls Summer Schedule
FM HS Girls Summer Schedule
bweldon
 
FM Girls BBall Summer Schedule
FM Girls BBall Summer ScheduleFM Girls BBall Summer Schedule
FM Girls BBall Summer Schedule
bweldon
 
FM Girls BBall Summer Schedule - June
FM Girls BBall Summer Schedule - JuneFM Girls BBall Summer Schedule - June
FM Girls BBall Summer Schedule - June
bweldon
 
FM Youth Girls Basketball - Summer 2017
FM Youth Girls Basketball - Summer 2017FM Youth Girls Basketball - Summer 2017
FM Youth Girls Basketball - Summer 2017
bweldon
 
June BBall Schedule
June BBall ScheduleJune BBall Schedule
June BBall Schedule
bweldon
 
Central shooting academy flyer
Central shooting academy flyerCentral shooting academy flyer
Central shooting academy flyer
bweldon
 
4r statistics and probability relearning
4r  statistics and probability relearning4r  statistics and probability relearning
4r statistics and probability relearning
bweldon
 
5r linear systems relearning
5r   linear systems relearning5r   linear systems relearning
5r linear systems relearning
bweldon
 
3r linear equations relearning
3r  linear equations relearning3r  linear equations relearning
3r linear equations relearning
bweldon
 
Linear equations review
Linear equations reviewLinear equations review
Linear equations review
bweldon
 
Slope Stuff
Slope StuffSlope Stuff
Slope Stuff
bweldon
 
The role of your coaches
The role of your coachesThe role of your coaches
The role of your coaches
bweldon
 
Player's Role
Player's RolePlayer's Role
Player's Role
bweldon
 
Culture
CultureCulture
Culture
bweldon
 
November 2016 BBall Calendar
November 2016 BBall CalendarNovember 2016 BBall Calendar
November 2016 BBall Calendar
bweldon
 
Functions Study Guided
Functions Study GuidedFunctions Study Guided
Functions Study Guided
bweldon
 
Functions fill in the blank passage
Functions fill in the blank passageFunctions fill in the blank passage
Functions fill in the blank passage
bweldon
 
Functions fill in the blank passage
Functions fill in the blank passageFunctions fill in the blank passage
Functions fill in the blank passage
bweldon
 
Linear functions station 3
Linear functions station 3Linear functions station 3
Linear functions station 3
bweldon
 

More from bweldon (20)

What shape is your name
What shape is your nameWhat shape is your name
What shape is your name
 
FM HS Girls Summer Schedule
FM HS Girls Summer ScheduleFM HS Girls Summer Schedule
FM HS Girls Summer Schedule
 
FM Girls BBall Summer Schedule
FM Girls BBall Summer ScheduleFM Girls BBall Summer Schedule
FM Girls BBall Summer Schedule
 
FM Girls BBall Summer Schedule - June
FM Girls BBall Summer Schedule - JuneFM Girls BBall Summer Schedule - June
FM Girls BBall Summer Schedule - June
 
FM Youth Girls Basketball - Summer 2017
FM Youth Girls Basketball - Summer 2017FM Youth Girls Basketball - Summer 2017
FM Youth Girls Basketball - Summer 2017
 
June BBall Schedule
June BBall ScheduleJune BBall Schedule
June BBall Schedule
 
Central shooting academy flyer
Central shooting academy flyerCentral shooting academy flyer
Central shooting academy flyer
 
4r statistics and probability relearning
4r  statistics and probability relearning4r  statistics and probability relearning
4r statistics and probability relearning
 
5r linear systems relearning
5r   linear systems relearning5r   linear systems relearning
5r linear systems relearning
 
3r linear equations relearning
3r  linear equations relearning3r  linear equations relearning
3r linear equations relearning
 
Linear equations review
Linear equations reviewLinear equations review
Linear equations review
 
Slope Stuff
Slope StuffSlope Stuff
Slope Stuff
 
The role of your coaches
The role of your coachesThe role of your coaches
The role of your coaches
 
Player's Role
Player's RolePlayer's Role
Player's Role
 
Culture
CultureCulture
Culture
 
November 2016 BBall Calendar
November 2016 BBall CalendarNovember 2016 BBall Calendar
November 2016 BBall Calendar
 
Functions Study Guided
Functions Study GuidedFunctions Study Guided
Functions Study Guided
 
Functions fill in the blank passage
Functions fill in the blank passageFunctions fill in the blank passage
Functions fill in the blank passage
 
Functions fill in the blank passage
Functions fill in the blank passageFunctions fill in the blank passage
Functions fill in the blank passage
 
Linear functions station 3
Linear functions station 3Linear functions station 3
Linear functions station 3
 

Recently uploaded

writing about opinions about Australia the movie
writing about opinions about Australia the moviewriting about opinions about Australia the movie
writing about opinions about Australia the movie
Nicholas Montgomery
 
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem studentsRHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
Himanshu Rai
 
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold MethodHow to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
Celine George
 
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdfWalmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
TechSoup
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
amberjdewit93
 
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdfLiberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
WaniBasim
 
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptxChapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Denish Jangid
 
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPLAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
RAHUL
 
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
Academy of Science of South Africa
 
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 InventoryHow to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
Celine George
 
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Dr. Vinod Kumar Kanvaria
 
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityNatural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Akanksha trivedi rama nursing college kanpur.
 
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptxPrésentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
siemaillard
 
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
PECB
 
How to Make a Field Mandatory in Odoo 17
How to Make a Field Mandatory in Odoo 17How to Make a Field Mandatory in Odoo 17
How to Make a Field Mandatory in Odoo 17
Celine George
 
Hindi varnamala | hindi alphabet PPT.pdf
Hindi varnamala | hindi alphabet PPT.pdfHindi varnamala | hindi alphabet PPT.pdf
Hindi varnamala | hindi alphabet PPT.pdf
Dr. Mulla Adam Ali
 
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
Wahiba Chair Training & Consulting
 
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingYour Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Excellence Foundation for South Sudan
 
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
National Information Standards Organization (NISO)
 
Life upper-Intermediate B2 Workbook for student
Life upper-Intermediate B2 Workbook for studentLife upper-Intermediate B2 Workbook for student
Life upper-Intermediate B2 Workbook for student
NgcHiNguyn25
 

Recently uploaded (20)

writing about opinions about Australia the movie
writing about opinions about Australia the moviewriting about opinions about Australia the movie
writing about opinions about Australia the movie
 
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem studentsRHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
RHEOLOGY Physical pharmaceutics-II notes for B.pharm 4th sem students
 
How to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold MethodHow to Build a Module in Odoo 17 Using the Scaffold Method
How to Build a Module in Odoo 17 Using the Scaffold Method
 
Walmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdfWalmart Business+ and Spark Good for Nonprofits.pdf
Walmart Business+ and Spark Good for Nonprofits.pdf
 
Digital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental DesignDigital Artefact 1 - Tiny Home Environmental Design
Digital Artefact 1 - Tiny Home Environmental Design
 
Liberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdfLiberal Approach to the Study of Indian Politics.pdf
Liberal Approach to the Study of Indian Politics.pdf
 
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptxChapter wise All Notes of First year Basic Civil Engineering.pptx
Chapter wise All Notes of First year Basic Civil Engineering.pptx
 
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UPLAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
LAND USE LAND COVER AND NDVI OF MIRZAPUR DISTRICT, UP
 
South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)South African Journal of Science: Writing with integrity workshop (2024)
South African Journal of Science: Writing with integrity workshop (2024)
 
How to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 InventoryHow to Setup Warehouse & Location in Odoo 17 Inventory
How to Setup Warehouse & Location in Odoo 17 Inventory
 
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...
 
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama UniversityNatural birth techniques - Mrs.Akanksha Trivedi Rama University
Natural birth techniques - Mrs.Akanksha Trivedi Rama University
 
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptxPrésentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
Présentationvvvvvvvvvvvvvvvvvvvvvvvvvvvv2.pptx
 
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...
 
How to Make a Field Mandatory in Odoo 17
How to Make a Field Mandatory in Odoo 17How to Make a Field Mandatory in Odoo 17
How to Make a Field Mandatory in Odoo 17
 
Hindi varnamala | hindi alphabet PPT.pdf
Hindi varnamala | hindi alphabet PPT.pdfHindi varnamala | hindi alphabet PPT.pdf
Hindi varnamala | hindi alphabet PPT.pdf
 
How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience How to Create a More Engaging and Human Online Learning Experience
How to Create a More Engaging and Human Online Learning Experience
 
Your Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective UpskillingYour Skill Boost Masterclass: Strategies for Effective Upskilling
Your Skill Boost Masterclass: Strategies for Effective Upskilling
 
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
Pollock and Snow "DEIA in the Scholarly Landscape, Session One: Setting Expec...
 
Life upper-Intermediate B2 Workbook for student
Life upper-Intermediate B2 Workbook for studentLife upper-Intermediate B2 Workbook for student
Life upper-Intermediate B2 Workbook for student
 

Sec. 1.4 order of operations