Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 307 · 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. 1.12 + 72 + 59 + 47 =
2. 2.75 + 60 + 49 + 73 =
3. 3.32 + 60 + 20 + 46 =
4. 4.72 + 79 + 42 + 66 =
5. 5.64 + 49 + 59 + 13 =
6. 6.68 + 18 + 31 + 52 =
7. 7.85 + 37 + 67 + 68 =
8. 8.16 + 31 + 86 + 47 =
9. 9.56 + 80 + 44 + 57 =
10. 10.87 + 40 + 45 + 88 =
11. 11.32 + 71 + 88 + 47 =
12. 12.14 + 60 + 17 + 66 =
13. 13.13 + 64 + 19 + 36 =
14. 14.72 + 71 + 32 + 39 =
15. 15.27 + 28 + 23 + 63 =
16. 16.40 + 24 + 34 + 40 =
17. 17.29 + 74 + 65 + 49 =
18. 18.41 + 27 + 41 + 25 =
19. 19.68 + 39 + 13 + 69 =
20. 20.35 + 70 + 35 + 79 =
21. 21.13 + 15 + 83 + 51 =
22. 22.81 + 81 + 42 + 48 =
23. 23.71 + 61 + 42 + 33 =
24. 24.12 + 60 + 53 + 72 =
25. 25.12 + 60 + 22 + 64 =
26. 26.18 + 22 + 22 + 58 =
27. 27.78 + 37 + 67 + 13 =
28. 28.88 + 59 + 52 + 50 =
29. 29.27 + 35 + 63 + 75 =
30. 30.70 + 55 + 74 + 73 =
31. 31.84 + 11 + 65 + 21 =
32. 32.69 + 32 + 62 + 16 =
33. 33.48 + 44 + 53 + 22 =
34. 34.82 + 45 + 12 + 31 =
35. 35.82 + 75 + 26 + 89 =
36. 36.61 + 65 + 15 + 30 =
37. 37.59 + 47 + 11 + 44 =
38. 38.54 + 32 + 84 + 17 =
39. 39.86 + 87 + 15 + 34 =
40. 40.82 + 41 + 21 + 16 =

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