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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 2 Page 353

Round the given decimal number to the nearest 1 000 000 000.

4* 10^9

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. 4 241 933 200Let's start by rounding the given number to the nearest 1 000 000 000. Since the digit in the hundred- millions place is less than 5, we will not modify the digit in the billions place. 4 241 933 200 ≈ 4 000 000 000 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 4.

4 000 000 000

Factor out 4

4* 1 000 000 000

Write as a power

4* 10^9

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