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Big Ideas Math: Modeling Real Life, Grade 8

BI

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

Chapter Review

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Exercise 44 Page 365

Start by factoring out 10^(- 4).

4.1* 10^(- 4)

Practice makes perfect

We want to subtract two numbers that are written in scientific notation. (5.9* 10^(- 4))-(1.8* 10^(- 4)) Notice that the exponent of 10 is the same for both numbers. To subtract the expressions, we can factor out 10^(- 4).

(5.9* 10^(- 4))-(1.8* 10^(- 4))

Factor out 10^(- 4)

(5.9-1.8)* 10^(- 4)

Subtract term

4.1* 10^(- 4)

Subchapter links

1 Exponents p.363

2 Product of Powers Property p.363

3 Quotient of Powers Property p.364

4 Zero and Negative Exponents p.364

5 Estimating Quantities p.365

6 Scientific Notation p.365

7 Operations in Scientific Notation p.365