Math: Unit 4

Power Up

100

What is 10 x 10 x 10 written in exponential form?

10³

200

Find the product of 5 x 10²

500

300

Which expression is equivalent to 8 x 10 x 10 x 10?

a: 8 x 10³

b: 8 x 10²

a: 8 x 10³

400

Find the product: 4.5 x 100

450

500

Fill in the blank to complete the equation:

9 x 10^? = 90,000

4

Whole Number Warriors

100

Solve 4,321 x 3

12,693

200

Solve 53 x 26

1,378

300

Solve 72 x 34

2,448

400

Solve 9,105 x 6

54,630

500

Which expression helps you solve 6 x .9 by using powers of 10?

a: 6 x 9 x 10

b: 6 x 9 x .1

b: 6 x 9 x .1

Decimal Dash

100

Solve 60 x .1

6

200

Solve 45 x .01

.45

300

Solve 8 x .3

2.4

400

If 46 x 23 = 1,058 what is the product of 46 x .23

10.58

500

Solve .1 x 5.7

.57

Estimate It!

100

Estimate the product of 4,125 x 4

16,000

200

Without calculating will 89.5 x .1 be greater than or less than 89.5

Less than (because you are multiplying by a number smaller than one)

300

Sam reads 48 pages a day. Is it reasonable to estimate he reads more than 600 pages in 10 days?

No (because 48 x 10 is 480 which is less than 600)

400

A truck weighs 5,000 lbs. A car weighs .4 as much as the truck. Which vehicle is heavier?

The truck (multiplying a number by .4 makes is smaller)

500

Without solving, explain why 3.5 x 10 results in a number larger than 3.5

because you are multiplying by a whole number bigger than one

Show Your Thinking

100

Write 3 x .4 as a repeated addition sentence.

.4 + .4 + .4

200

If you shade 4 full columns on a hundredths grid, what decimal number does that represent?

.4 or .40

300

Which is the equivalent expression for 5 x 100?

a: 5 x 10²

b: 5 x 10³

a: 5 x 10²

400

Complete the logic: To find 54 x 0.16, you can multiply 54 x 16 and then multiply the result by what decimal?

.01

500

Write the number 100,000 as a power of 10.

10⁵