Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 786 · 40 questions

The fast method (Keep a running total): Start with the first number. Add the tens of the next number, then its ones. Keep going until the list ends — only one total in your head at a time.

1. 1.49 + 37 + 23 + 18 =
2. 2.19 + 42 + 46 + 45 =
3. 3.66 + 19 + 32 + 19 =
4. 4.28 + 78 + 32 + 50 =
5. 5.48 + 45 + 39 + 22 =
6. 6.25 + 26 + 86 + 67 =
7. 7.37 + 58 + 38 + 23 =
8. 8.27 + 76 + 85 + 36 =
9. 9.11 + 54 + 17 + 26 =
10. 10.70 + 27 + 61 + 85 =
11. 11.33 + 71 + 83 + 19 =
12. 12.17 + 50 + 61 + 38 =
13. 13.13 + 12 + 70 + 13 =
14. 14.27 + 14 + 74 + 14 =
15. 15.51 + 59 + 66 + 74 =
16. 16.78 + 60 + 50 + 51 =
17. 17.54 + 27 + 52 + 82 =
18. 18.24 + 58 + 61 + 79 =
19. 19.81 + 41 + 13 + 47 =
20. 20.17 + 53 + 14 + 15 =
21. 21.11 + 22 + 69 + 70 =
22. 22.82 + 22 + 59 + 72 =
23. 23.32 + 65 + 49 + 60 =
24. 24.76 + 15 + 14 + 14 =
25. 25.54 + 20 + 89 + 72 =
26. 26.69 + 44 + 86 + 26 =
27. 27.76 + 59 + 58 + 50 =
28. 28.33 + 28 + 55 + 87 =
29. 29.22 + 16 + 25 + 47 =
30. 30.28 + 38 + 71 + 73 =
31. 31.69 + 87 + 54 + 86 =
32. 32.22 + 30 + 67 + 76 =
33. 33.17 + 62 + 50 + 48 =
34. 34.27 + 48 + 28 + 85 =
35. 35.44 + 44 + 34 + 74 =
36. 36.66 + 75 + 70 + 35 =
37. 37.15 + 38 + 17 + 24 =
38. 38.87 + 32 + 61 + 19 =
39. 39.68 + 73 + 65 + 51 =
40. 40.42 + 70 + 29 + 77 =

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