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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 5 Page 363

Calculate the power and then substitute into the given expression.

100

Practice makes perfect

The expression 6^3, or 6 to the third power, can be written as the product of three 6 terms.

6^3

Rewrite 6^3 as 6* 6* 6

6* 6* 6

Multiply

216

Now, we will rewrite the given expression by using this value.

|1/2(16-6^3) |

Rewrite 6^3 as 216

|1/2(16-216) |

Subtract term

|1/2(- 200) |

MoveRightFacToNum

a/c* b = a* b/c

|- 200/2 |

Calculate quotient

|- 100|

|-100|=100

100

Using a calculator, we can either enter | 12(16-6^3)| or | 12(16-(6 * 6 * 6))|. Both expressions give us the same answer.

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