Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 682 · 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. 1.13 + 57 + 68 + 13 =
2. 2.48 + 84 + 26 + 37 =
3. 3.55 + 59 + 11 + 77 =
4. 4.22 + 88 + 74 + 25 =
5. 5.28 + 18 + 39 + 72 =
6. 6.25 + 23 + 60 + 31 =
7. 7.55 + 75 + 34 + 61 =
8. 8.44 + 71 + 48 + 20 =
9. 9.75 + 58 + 64 + 19 =
10. 10.12 + 83 + 33 + 18 =
11. 11.81 + 67 + 20 + 23 =
12. 12.50 + 71 + 76 + 20 =
13. 13.27 + 86 + 28 + 62 =
14. 14.84 + 39 + 69 + 70 =
15. 15.14 + 40 + 72 + 55 =
16. 16.79 + 80 + 27 + 34 =
17. 17.54 + 44 + 32 + 15 =
18. 18.80 + 19 + 88 + 33 =
19. 19.72 + 54 + 36 + 39 =
20. 20.29 + 38 + 58 + 24 =
21. 21.86 + 34 + 19 + 65 =
22. 22.25 + 79 + 78 + 67 =
23. 23.15 + 33 + 29 + 25 =
24. 24.79 + 26 + 17 + 44 =
25. 25.14 + 23 + 86 + 21 =
26. 26.52 + 60 + 64 + 43 =
27. 27.27 + 66 + 75 + 37 =
28. 28.47 + 29 + 33 + 72 =
29. 29.28 + 61 + 36 + 38 =
30. 30.13 + 52 + 35 + 13 =
31. 31.77 + 33 + 48 + 69 =
32. 32.12 + 28 + 37 + 55 =
33. 33.55 + 87 + 63 + 25 =
34. 34.83 + 18 + 41 + 76 =
35. 35.85 + 73 + 21 + 37 =
36. 36.35 + 44 + 70 + 13 =
37. 37.15 + 76 + 71 + 44 =
38. 38.23 + 76 + 70 + 83 =
39. 39.19 + 62 + 36 + 86 =
40. 40.38 + 20 + 22 + 34 =

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