DashboardNewsSettingsHelp
Get Premium
Dashboard
Dashboard Sign out
Big Ideas Math: Modeling Real Life, Grade 7
BI
Big Ideas Math: Modeling Real Life, Grade 7 View details
1. Multiplying Integers
Continue to next subchapter

Exercise 38 Page 53

Pay close attention to the order of operations.

There is no answer for this exercise
Practice makes perfect

According to the order of operations, expressions inside parentheses are evaluated first, followed by exponents, then multiplication and division, and finally addition and subtraction are evaluated last. We can use the acronym PEMDAS to help us remember the correct order!

pemdas
For the given expression, this means evaluating the expression inside the parentheses completely before adding the product. 2+1* (- 7+5) Let's do it!

Operation Before Simplification After Simplification
Add Terms 2+1* ( - 7+ 5) 2+1* ( - 2)
Multiply 2+ 1* ( - 2) 2+( - 2)
Add terms 2+( - 2) 0

The expression is equal to 0.

Alternative Solution

 Using a Calculator
We can also evaluate this expression using a calculator. To do so, we type it as shown below.

Subchapter links expand_more
arrow_right Try It p.50-51
1
Try It 2 (Page 50)
Try It 3 (Page 50)
Try It 4 (Page 50)
Try It 5 (Page 50)
Try It 6 (Page 50)
Try It 7 (Page 51)
Try It 8 (Page 51)
Try It 9 (Page 51)
arrow_right Self-Assessment for Concept & Skills p.51
10
Self-Assessment for Concept & Skills 11 (Page 51)
Self-Assessment for Concept & Skills 12 (Page 51)
Self-Assessment for Concept & Skills 13 (Page 51)
14
15
arrow_right Self-Assessment for Problem Solving p.52
16
17
arrow_right Review & Refresh p.53
1
Review & Refresh 2 (Page 53)
Review & Refresh 3 (Page 53)
Review & Refresh 4 (Page 53)
Review & Refresh 5 (Page 53)
Review & Refresh 6 (Page 53)
Review & Refresh 7 (Page 53)
Review & Refresh 8 (Page 53)
arrow_right Concept, Skills, & Problem Solving p.53-54
9
Concept, Skills, & Problem Solving 10 (Page 53)
Concept, Skills, & Problem Solving 11 (Page 53)
Concept, Skills, & Problem Solving 12 (Page 53)
Concept, Skills, & Problem Solving 13 (Page 53)
Concept, Skills, & Problem Solving 14 (Page 53)
Concept, Skills, & Problem Solving 15 (Page 53)
Concept, Skills, & Problem Solving 16 (Page 53)
Concept, Skills, & Problem Solving 17 (Page 53)
Concept, Skills, & Problem Solving 18 (Page 53)
Concept, Skills, & Problem Solving 19 (Page 53)
Concept, Skills, & Problem Solving 20 (Page 53)
Concept, Skills, & Problem Solving 21 (Page 53)
Concept, Skills, & Problem Solving 22 (Page 53)
Concept, Skills, & Problem Solving 23 (Page 53)
Concept, Skills, & Problem Solving 24 (Page 53)
Concept, Skills, & Problem Solving 25 (Page 53)
Concept, Skills, & Problem Solving 26 (Page 53)
Concept, Skills, & Problem Solving 27 (Page 53)
28
29
Concept, Skills, & Problem Solving 30 (Page 53)
Concept, Skills, & Problem Solving 31 (Page 53)
Concept, Skills, & Problem Solving 32 (Page 53)
Concept, Skills, & Problem Solving 33 (Page 53)
Concept, Skills, & Problem Solving 34 (Page 53)
Concept, Skills, & Problem Solving 35 (Page 53)
Concept, Skills, & Problem Solving 36 (Page 53)
Concept, Skills, & Problem Solving 37 (Page 53)
Concept, Skills, & Problem Solving 38 (Page 53)
Concept, Skills, & Problem Solving 39 (Page 53)
Concept, Skills, & Problem Solving 40 (Page 53)
Concept, Skills, & Problem Solving 41 (Page 53)
42
43
Concept, Skills, & Problem Solving 44 (Page 54)
Concept, Skills, & Problem Solving 45 (Page 54)
46
47
48
49
50