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Big Ideas Math: Modeling Real Life, Grade 8

BI

Big Ideas Math: Modeling Real Life, Grade 8 View details

4. Rational Numbers

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Exercise 11 Page 399

Start by writing the given mixed number as a fraction. Then, divide the numerator by the denominator.

9.083

Practice makes perfect

We want to write the given mixed number as a decimal. 9 112To do so, we will first rewrite it as a fraction.

9 112

▼

Rewrite 9 112 as 109/12

a bc=a* c+b/c

9 * 12 + 1/12

Multiply

108 + 1/12

Add terms

109/12

We found that 9 112 written as a fraction is 109 12. Recall that this means 109÷ 12. Therefore, we will divide the numerator of this fraction by its denominator. Let's do it!

We found that 10912 written as a decimal is 9.083. Since we previously found that 9 112 is equal to 10912, we can say that 9 112 written as a decimal is 9.083.

Subchapter links

Try It p.396-397

Self-Assessment for Concepts & Skills p.397-398

Review & Refresh p.399

Concepts, Skills, & Problem Solving p.399-400