True/False
Adding Decimals
Subtracting Decimals
Multiplying Decimals
Word Problems
100

When adding and subtracting decimals, you always include the decimals.

True

100

26.43 + 7.19


33.62

100

1.23-1.11=

0.12

100

.24 x .7 

.168

100

Matthew went to the store and bought a sandwich for $4.70 cents. He paid with a ten dollar bill. How much money did he get back? 

$5.30

200

When adding and subtracting decimals, you always put the longer number on top.

False

200

8.009 + 6.5


14.509

200

5.23-0.1=

5.13

200

0.85 x 0.02


.017

200

Austin and Chase went to the store together. Austin bought a video game for $32.77 and Chase bought a soccer ball for $12.45. How much did Austin and Chase spend together? 

$45.22

300

When adding and subtracting decimals, you ignore the decimal points.

False

300

0.79 +0.45


1.24

300

27.81-5.62

22.19

300

.22 x .44=

.0968

300

Laila has 4 cats named Madison, Liam, Ciera, and Lorilei. Laila wants to buy each cat a new toy. The toy she wants to buy each cat costs $5.25. How much will Laila spend if she buys all 4 of her cats this toy? 

$21.00

400

When subtracting decimals you put the bigger number on top.

True

400

17.82 + 3.66=

21.48

400

8.613 -7.258


1.355

400

6.32 x 3

18.96

400

Aaliyah buys two books, one poster, and one eraser at the school book fair. Each book costs $8.50. The poster cost $3.45 and the eraser cost $0.70. How much did Aaliyah spend? 

21.15

500

When adding and subtracting decimals, you count how many numbers are behind the decimals in the problem and put that in your answer.

False! That's for multiplying!

500

111.7 + 102.81=

214.51

500

105.65-62.33=

43.32

500

What is the trick when multiplying decimals by powers of 10? What is the trick when dividing by powers of 10?

Move the decimal to the right when multiplying. Move the decimal to the left when dividing. 

500

Michael spends 139.74 minutes a day talking to his friend Matthew on the phone. How much time does Michael spend talking on the phone with Matthew in ONE week? 

978.18 minutes 

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