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Big Ideas Math: Modeling Real Life, Grade 8

BI

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

6. Scientific Notation

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Exercise 4 Page 353

Round the given decimal number to the nearest 100 000 000.

9* 10^8

Practice makes perfect

We want to round the given decimal number and write the result as the product of a single digit and a power of 10. 879 679 466Let's start by rounding the given number to the nearest 100 000 000. Since the digit in the ten- millions place is greater than 5, we will add 1 to the digit in the hundred- millions place. 8 79 679 466 ≈ 900 000 000 Finally, we will write the above number as the product of a single digit and a power of 10. To do so, let's first factor out 9.

900 000 000

Factor out 9

9* 100 000 000

Write as a power

9* 10^8

Subchapter links

Try It p.350-351

Self-Assessment for Concepts & Skills p.351

Self-Assessment for Problem Solving p.352

Review & Refresh p.353

Concepts, Skills, & Problem Solving p.353-354