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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 3 Page 396

Start by writing the given mixed number as a fraction.

4.375

Practice makes perfect

We want to write the given mixed number as a decimal number. 4 38 To do so, we will first rewrite it as a fraction.

4 38

▼

Rewrite 4 38 as 35/8

a bc=a* c+b/c

4* 8+3/8

Multiply

32 + 3/8

Add terms

35/8

We can rewrite the given fraction as a b, where a is an integer and b is a power of 10. Let's do it!

35/8

a/b=a * 125/b * 125

35 * 125/8 * 125

Multiply

4375/1000

Now, we can write the fraction as a decimal. 4375/10000 = 4.375

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