Add and Subtract Decimal Models

What is the value of the decimal base ten blocks?

• 5.06

• 5.06

• 0.56

• 56.0

The shaded model represents the decimal-

• 1.2

• 1.02

• 12

• 102

At the grocery store, Vanessa bought 3.8 pounds of ground beef, 2 pounds of tomatoes, and 1.31 pounds of chicken. How much did these three items weigh altogether?

• 7.11 pounds

• 8.31 pounds

• 6.11 pounds

• 7.21 pounds

Richard bought a stereo for $252.14 and some speakers for $117.56. What was the total cost of his purchase?

• $369.70

• $370.70

• $371.80

• $372.60

Find the value of each decimal model and then find the difference.

0.47 - ​ (a)   = ​ (b)  

• 0.16

• 0.31

• 0.47

• 0.63

• 0.10

• 0.06

12 - 5.1 = ?

• 7.1

• 6

• 6.9

• 7.9

Students carry pails of water in a running race. The water left in each runner's pail is measured at the finish line. Lucy had 4 liters in her pail. Sally and Bree had 2.57 liters and 1.41 liters in their pails. What is the total amount of water the three runners had at the finish line?

• 7.98 liters

• 7.88 liters

• 8.98 liters

• 6.88 liters

What is the result of the subtraction 19.8 - 10.46?

• 9.44

• 8.64

• 9.34

• 8.66

13.5 - 2.8

• 9.2

• 12.2

• 10.7

• 8.7

Estimate the sum of $4.28, $21.35, and $14.65 by rounding each number to the nearest tenth.

• $40.30

• $41.00

• $38.00

• $40.40