Power Up
What is 10 x 10 x 10 written in exponential form?
103
Solve 4,321 x 3
12,693
Solve 60 x .1
6
Estimate the product of 4,125 x 4
16,000
Write 3 x .4 as a repeated addition sentence.
.4 + .4 + .4
Find the product of 5 x 102
500
Solve 53 x 26
1,378
Solve 45 x .01
.45
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)
If you shade 4 full columns on a hundredths grid, what decimal number does that represent?
.4 or .40
Which expression is equivalent to 8 x 10 x 10 x 10?
a: 8 x 103
b: 8 x 102
a: 8 x 103
Solve 72 x 34
2,448
Solve 8 x .3
2.4
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)
Which is the equivalent expression for 5 x 100?
a: 5 x 102
b: 5 x 103
a: 5 x 102
Find the product: 4.5 x 100
450
Solve 9,105 x 6
54,630
If 46 x 23 = 1,058 what is the product of 46 x .23
10.58
The truck (multiplying a number by .4 makes is smaller)
Complete the logic: To find 54 x 0.16, you can multiply 54 x 16 and then multiply the result by what decimal?
.01
Fill in the blank to complete the equation:
9 x 10? = 90,000
4
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
Solve .1 x 5.7
.57
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
Write the number 100,000 as a power of 10.
105