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Envision Math 2.0: Grade 6, Volume 1

EM

Envision Math 2.0: Grade 6, Volume 1 View details

1. Understand and Represent Exponents

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Exercise 14 Page 120

Pay close attention to the order of operations.

45 000

Practice makes perfect

We want to evaluate the given expression. 4.5 * 10^4 According to the order of operations, the expression with exponent is evaluated first, while multiplication is evaluated last. Knowing this, let's evaluate first the power.

10^4

Rewrite 10^4 as 10 * 10 * 10 * 10

10 * 10 * 10 * 10

Multiply

10 000

Now that we know that 10^4 is 10 000, we can substitute 10 000 for 10^4 and evaluate the multiplication.

4.5 * 10^4

10^4= 10 000

4.5 * 10 000

Multiply

45 000

The expression equals 45 000.

Subchapter links

Do You Understand? p.120

Do You Know How? p.120

Assessment Practice p.122