Decimals Review

True or False

100

you line up the decimals when you add

true

200

you line up the decimals when you subtract

true

300

you line up the decimals when you multiply

false

400

this problem is set up correctly: 

  64.39
- 2.155
---------

false

Multiplying Decimals

100

92 x .2 =

18.4

200

15.6 x .4=

6.24

300

1.5 x .2 =

0.3

400

.98 x 22 =

21.56

Wild Card: Add/Subtract

100

5.98 + .65 ---------

6.63

200

568 - 4.9 ---------

563.1

300

180 - 24.65 ----------

155.35

400

15.72 + 3.19 ---------

18.91

Multiplying Decimals Word Problems

100

A cookie recipe requires 0.5 cups of sugar for every batch. If you're going to make 10 batches of cookies, how much sugar do you need? 

5 cups

200

A large pizza contains 8 slices of pizza. Each slice costs $1.75. How much does the whole pizza cost?

$14.00

300

Joe runs 3.5 miles Monday-Friday every week. How many miles does he run per week?

17.5 miles

400

A box contains 12 chocolate donuts. Each donut costs $0.65. How much does the box of donuts cost?

$7.80