body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

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

Exercise 36 Page 35

The absolute value of a number is its distance from 0 on the number line.

5/9

Practice makes perfect

We want to find the distance between - 79 and - 29 on a number line. First, we can recall that the distance between any two numbers on a number line is the absolute value of the difference of the two numbers.

We can use this information to find the distance between - 79 and - 29. Remember that subtracting a number is the same as adding its opposite.

|- 7/9 -(- 2/9)|

a-(- b)=a+b

|- 7/9 +2/9|

▼

Add fractions

MoveNegFracToNum

Put minus sign in numerator

|- 7/9 +2/9|

Add fractions

|- 7+2/9|

Add terms

|- 5/9|

MoveNegNumToFrac

Put minus sign in front of fraction

|- 5/9|

|-5/9|=5/9

5/9

Subchapter links

Try It p.30-32

Self-Assessment for Concept & Skills p.32

Self-Assessment for Problem Solving p.33

Review & Refresh p.34

Concept, Skills, & Problem Solving p.34-36