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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 13 Page 399

Start by writing the given mixed number as a fraction.

6.025

Practice makes perfect

We want to write the given mixed number as a decimal. 6 140 To do so, we will first rewrite it as a fraction.

6 140

▼

Rewrite 6 140 as 241/40

a bc=a* c+b/c

6 * 40 + 1/40

Multiply

240 + 1/40

Add terms

241/40

We found that 6 140 written as a fraction is 241 40. Let's rewrite this fraction as a b, where a is an integer and b is a power of 10.

241/40

a/b=a * 25/b * 25

241* 25/40* 25

Multiply

6025/1000

Now, we can write the fraction as a decimal. 6025/1000 = 6.025

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