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Big Ideas Math: Modeling Real Life, Grade 8

BI

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

1. Exponents

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Exercise 16 Page 323

An exponent is a number or expression written above a number indicating how many times the number is being multiplied by itself.

- 7^5

Practice makes perfect

We want to write the given expression using exponents. Recall that an exponent is a number or expression written above a number indicating how many times that number is being multiplied by itself. Let's consider the given expression. - ( 7 * 7 * 7 * 7 * 7_(5times) )

We can see that the factor 7 is being multiplied by itself five times. - (7^5 ) Note that now we can drop the parentheses — the exponent has a higher priority than the negative sign. This means our expression does not change when we remove the parentheses. - ( 7^5 ) ⇔ - 7^5

Subchapter links

Try It p.320-321

Self-Assessment for Concepts & Skills p.321

Self-Assessment for Problem Solving p.322

Review & Refresh p.323

Concepts, Skills, & Problem Solving p.323-324