True/False
When adding and subtracting decimals, you always include the decimals.
True
26.43 + 7.19
33.62
1.23-1.11=
0.12
.24 x .7
.168
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
When adding and subtracting decimals, you always put the longer number on top.
False
8.009 + 6.5
14.509
5.23-0.1=
5.13
0.85 x 0.02
.017
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
When adding and subtracting decimals, you ignore the decimal points.
False
0.79 +0.45
1.24
27.81-5.62
22.19
.22 x .44=
.0968
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
When subtracting decimals you put the bigger number on top.
True
17.82 + 3.66=
21.48
8.613 -7.258
1.355
6.32 x 3
18.96
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
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!
111.7 + 102.81=
214.51
105.65-62.33=
43.32
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.
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