Powers of 10
Adding
Subtracting
Word Problems
Definitions
100

What number does 102  represent?

100

100

7453.98 + 372.34

7826.32

100
43.09 - 12.9

30.19

100

Gina the grasshopper ate 14.5 blades of grass every minute. How much grass did she eat after 13 minutes?

188.5 blades of grass

100

What is the dividend?

What is being divided

200

What place value would a number be in if it was multiplied by 1/103

thousandths 
200

12.32 +14.87

27.19

200

409 - 325.9

83.1

200

Gina the grasshopper ate 0.25 inches of grass every minute. How long did it take her to eat 23.5 inches of grass?

47 minutes

200

What is a divisor?

What is doing the dividing

300

Using your power of ten rule, how could you explain the difference between 3 and 0.3

if you multiplied 3 by 1/10your decimal would move one place to the left, thus giving you 0.3

300

2,432.548 + 321.43

2753.978

300

7.12 - 2.456

4.664

300

Gina the grasshopper hopped 2.54 feet every 5 minutes. If she continues at this pace how far will she have hopped after an hour?

30.48 feet

300

What is the difference between a product and a quotient? 

a product is the answer to a multiplication problem and a quotient is the answer to a division problem

400

What is 573.985 x 102

57,398.5

400

78.098 + 31.009

109.107

400

1.03 - 0.89

0.14

400

Finn runs a race with a pace of 1 lap every 1.25 minutes. How long will it take him to run 7.5 laps?

6 minutes

400

What does a decimal do?

It separates the part from the whole

500

what would 124.78 look like in expanded form?

1 x 10+ 2 x 101+ 4 x 1 + 7 x 1/101 + 8 x 1/102

500

76.67 +89.76

166.43

500

53268.57 - 372.803

52865.767

500

You have a square garden with the length of 4.6 feet. what is the area of the yard?

21.16 feet

500

What kind of fraction are decimals ALWAYS cut into?

Some group of ten