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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 10 Page 399

Rewrite the given fraction as ab, where a is an integer and b is a power of 10.

- 0.15

Practice makes perfect

We want to write the given fraction as a decimal number. - 3/20To do so, we will ignore the negative sign for just a moment. Let's rewrite the fraction 320 as a b, where a is an integer and b is a power of 10.

3/20

a/b=a * 5/b * 5

3* 5/20* 5

Multiply

15/100

Now, we can write the fraction as a decimal. 15/100 = 0.15 Therefore, - 320 written as a decimal is - 0.15.

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