Name:    Lesson 2: Adding and Subtracting Decimals

1.

Regroup to select the correct sum of the decimals represented by the base ten blocks.

 Ones . Tenths Hundredths Thousandths
 a. 2.377 b. 3.487 c. 4.487 d. 3.377

2.

Regroup to select the correct sum of the decimals represented by the base ten blocks.

 Ones . Tenths Hundredths Thousandths
 a. 6.157 b. 5.057 c. 5.157 d. 6.057

3.

Select the correct estimate for the following sum.
2.625 + 1.407 + 1.721
 a. 6.7 b. 5.7 c. 4.7 d. 7.7

4.

Select the correct estimate for the following sum.
1.046 + 2.739 + 1.583
 a. 5.3 b. 4.3 c. 6.3 d. 3.3

5.

Regroup to select the correct difference of the decimals represented by the base ten blocks.

 Ones . Tenths Hundredths Thousandths
 a. 0.492 b. 0.408 c. 0.392 d. 0.292

6.

Select the correct difference for the following equation.
15.000 8.846
 a. 5.154 b. 7.154 c. 7.254 d. 6.154

7.

Hassan had to run a total of 10 km. During the first hour he ran 3.75 km, during the 2nd hour he ran 3.15 km, during the third hour he ran 2.85 km. How far has he run so far?
 a. 8.75 km b. 9.75 km c. 9.25 km d. 8.25 km

8.

How much farther does Hassan, from question 7, have left to run?
 a. 0.25 km b. 1.25 km c. 0.75 km d. 1.75 km

9.

Lucia would like to place a fence around a rectangular garden that is 0.150 km long and 0.100 km wide. How much fencing does she need?
 a. 0.500 km b. 0.250 km c. 0.300 km d. 0.450 km

10.

If Lucia, from question 9,  buys 0.750 km of fencing for her garden, how much will she have left?
 a. 0.450 km b. 0.300 km c. 0.500 km d. 0.250 km