Pre-Algebra Addition and Subtraction of Decimals

1. 3.2 + 4.2 =
-1.0
4.0
7.4
1.0

2. -3.2 + 4.5 =
7.7
12.0
-2.3
1.3

3. 4.5 + (-2.1) =
1.2
6.6
4.2
2.4

4. -11.1 + 23.2 =
12.1
12.3
34.3
-12.3

5. 13.2 - 14.3 =
-1.9
-0.9
-1.1
27.5

6. 2.7 + (-5.4) =
8.1
-8.1
2.7
-2.7

7. 2.1 - 4.2 =
2.1
2.9
-2.1
-1.9

8. -2.2 + (- 4.2) =
2.0
-6.4
6.4
-2.0

9. 3.24 - 2.17 =
1.70
-5.41
5.41
1.07

10. -15.0 + 11.0 =
-26.0
-4.0
-4.0
4.10





Answer Key