News
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
5. Subtracting Rational Numbers
Continue to next subchapter
search

Exercise 5 Page 31

Subtracting a number is the same as adding its opposite.

0
Practice makes perfect
We want to find the difference. Let's look at the given expression! - 8.8-( - 8.8)

We can recall that subtracting a number is the same as adding its opposite. - 8.8-( - 8.8) ⇔ - 8.8+ 8.8 Now, we can find the sum of two numbers with different signs. We can do so by subtracting the lesser absolute value from the greater absolute value. Then, we will use the sign of the number with the greater absolute value. First, we can calculate the absolute value of the numbers. | - 8.8|=8.8and| 8.8|=8.8 Notice that the absolute value of | - 8.8| is equal to the absolute value of | 8.8|. Let's subtract | - 8.8| from | 8.8|. | 8.8|-| - 8.8|&=8.8-8.8 &=0

Subchapter links expand_more
arrow_right Try It p.30-32
1
Try It 2 (Page 30)
Try It 3 (Page 30)
Try It 4 (Page 31)
Try It 5 (Page 31)
Try It 6 (Page 31)
Try It 7 (Page 31)
Try It 8 (Page 31)
Try It 9 (Page 32)
Try It 10 (Page 32)
Try It 11 (Page 32)
arrow_right Self-Assessment for Concept & Skills p.32
12
Self-Assessment for Concept & Skills 13 (Page 32)
Self-Assessment for Concept & Skills 14 (Page 32)
Self-Assessment for Concept & Skills 15 (Page 32)
arrow_right Self-Assessment for Problem Solving p.33
16
17
arrow_right Review & Refresh p.34
Review & Refresh 1 (Page 34)
Review & Refresh 2 (Page 34)
Review & Refresh 3 (Page 34)
Review & Refresh 4 (Page 34)
Review & Refresh 5 (Page 34)
Review & Refresh 6 (Page 34)
Review & Refresh 7 (Page 34)
Review & Refresh 8 (Page 34)
arrow_right Concept, Skills, & Problem Solving p.34-36
Concept, Skills, & Problem Solving 9 (Page 34)
Concept, Skills, & Problem Solving 10 (Page 34)
Concept, Skills, & Problem Solving 11 (Page 34)
Concept, Skills, & Problem Solving 12 (Page 34)
Concept, Skills, & Problem Solving 13 (Page 34)
Concept, Skills, & Problem Solving 14 (Page 34)
Concept, Skills, & Problem Solving 15 (Page 34)
Concept, Skills, & Problem Solving 16 (Page 34)
Concept, Skills, & Problem Solving 17 (Page 34)
Concept, Skills, & Problem Solving 18 (Page 34)
Concept, Skills, & Problem Solving 19 (Page 34)
Concept, Skills, & Problem Solving 20 (Page 34)
Concept, Skills, & Problem Solving 21 (Page 34)
Concept, Skills, & Problem Solving 22 (Page 34)
23
24
25
26
27
28
29
Concept, Skills, & Problem Solving 30 (Page 35)
Concept, Skills, & Problem Solving 31 (Page 35)
Concept, Skills, & Problem Solving 32 (Page 35)
Concept, Skills, & Problem Solving 33 (Page 35)
Concept, Skills, & Problem Solving 34 (Page 35)
Concept, Skills, & Problem Solving 35 (Page 35)
Concept, Skills, & Problem Solving 36 (Page 35)
Concept, Skills, & Problem Solving 37 (Page 35)
Concept, Skills, & Problem Solving 38 (Page 35)
Concept, Skills, & Problem Solving 39 (Page 35)
Concept, Skills, & Problem Solving 40 (Page 35)
Concept, Skills, & Problem Solving 41 (Page 35)
Concept, Skills, & Problem Solving 42 (Page 35)
Concept, Skills, & Problem Solving 43 (Page 35)
44
45
Concept, Skills, & Problem Solving 46 (Page 36)
Concept, Skills, & Problem Solving 47 (Page 36)
Concept, Skills, & Problem Solving 48 (Page 36)
Concept, Skills, & Problem Solving 49 (Page 36)
Concept, Skills, & Problem Solving 50 (Page 36)
Concept, Skills, & Problem Solving 51 (Page 36)
52
53
54
55
56
57