Name:    Lesson 10: Estimating Decimal Sums and Differences

1.

Use the following table to answer the questions below.

Pop - \$1.75
Chocolate Bar - \$0.99
Chips - \$1.45
Icecream - \$2.89

If Colin bought a pop and a chocolate bar, about how much money did he spend?
 a. \$2.75 b. \$3.00 c. \$3.25 d. \$3.75

2.

If Colin bought ice cream and a chocolate bar, how much money did he spend?
 a. \$2.89 b. \$3.89 c. \$4.89 d. \$5.89

3.

Colin bought chips and paid with a \$5.00 bill.  About how much change did he get back?
 a. \$1.00 b. \$2.00 c. \$2.50 d. \$3.50

4.

Colin bought ice cream and paid with a \$10.00 bill. About how much change did he get back?
 a. \$3.00 b. \$5.00 c. \$7.00 d. \$9.00

5.

Colin bought pop, chips and a chocolate bar. If he paid with a \$20.00 bill, about how much change did he get back?
 a. \$14.00 b. \$15.00 c. \$16.00 d. \$17.00

6.

Estimate the sum.
4.13 + 2.11
 a. 6.2 b. 5.2 c. 4.2 d. 7.2

7.

Estimate the sum.
5.9 + 1.2
 a. 6 b. 7 c. 8 d. 9

8.

Estimate the sum.
7.1 + 8.9 + 7.21
 a. 20 b. 21 c. 22 d. 23

9.

Estimate the difference.
7.9 - 1.2
 a. 8 b. 7 c. 6 d. 5

10.

Estimate the difference.
6.75 - 4.7
 a. 2 b. 3 c. 4 d. 5