Adding Decimals with Tenths

Name: _______________________________
Date: _______________________________

Instructions: Solve each addition problem. Remember to line up the decimal points!

Part A: Simple Addition

1. 0.3 + 0.2 = __________
2. 0.5 + 0.4 = __________
3. 0.1 + 0.7 = __________
4. 0.6 + 0.3 = __________
5. 0.4 + 0.5 = __________
6. 0.2 + 0.6 = __________
7. 0.8 + 0.1 = __________
8. 0.3 + 0.5 = __________

Part B: Whole Numbers and Tenths

9. 2.3 + 1.5 = __________
10. 3.2 + 2.6 = __________
11. 1.4 + 2.3 = __________
12. 4.1 + 1.8 = __________
13. 5.2 + 2.4 = __________
14. 3.5 + 1.4 = __________
15. 2.7 + 3.2 = __________
16. 4.3 + 2.5 = __________

Part C: Column Addition

Write the numbers in columns and add:

17. 3.6 + 2.3
_______
+ _______
_______
18. 4.5 + 3.4
_______
+ _______
_______
19. 5.7 + 2.8
_______
+ _______
_______

Part D: Word Problem

20. Sarah ran 2.3 kilometres on Monday and 1.8 kilometres on Tuesday. How many kilometres did she run altogether?

Answer: __________________ kilometres