Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 982 · 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. 1.85 + 13 + 53 + 81 =
2. 2.20 + 37 + 41 + 41 =
3. 3.31 + 69 + 86 + 15 =
4. 4.41 + 44 + 11 + 19 =
5. 5.14 + 21 + 44 + 64 =
6. 6.84 + 19 + 71 + 40 =
7. 7.68 + 87 + 42 + 54 =
8. 8.61 + 27 + 31 + 72 =
9. 9.26 + 40 + 83 + 80 =
10. 10.51 + 69 + 14 + 27 =
11. 11.82 + 23 + 89 + 34 =
12. 12.62 + 79 + 31 + 71 =
13. 13.81 + 59 + 56 + 11 =
14. 14.68 + 86 + 38 + 53 =
15. 15.49 + 47 + 55 + 59 =
16. 16.78 + 36 + 46 + 33 =
17. 17.20 + 17 + 83 + 52 =
18. 18.45 + 41 + 14 + 23 =
19. 19.38 + 17 + 52 + 11 =
20. 20.36 + 18 + 27 + 48 =
21. 21.14 + 53 + 46 + 79 =
22. 22.52 + 38 + 42 + 67 =
23. 23.16 + 38 + 60 + 35 =
24. 24.38 + 64 + 83 + 50 =
25. 25.80 + 63 + 41 + 19 =
26. 26.48 + 58 + 59 + 67 =
27. 27.29 + 31 + 13 + 48 =
28. 28.44 + 82 + 68 + 73 =
29. 29.66 + 63 + 70 + 27 =
30. 30.39 + 58 + 55 + 28 =
31. 31.20 + 42 + 13 + 56 =
32. 32.20 + 20 + 76 + 66 =
33. 33.44 + 54 + 74 + 15 =
34. 34.23 + 19 + 29 + 89 =
35. 35.22 + 18 + 23 + 61 =
36. 36.68 + 28 + 81 + 16 =
37. 37.87 + 16 + 31 + 81 =
38. 38.88 + 56 + 60 + 80 =
39. 39.20 + 72 + 27 + 34 =
40. 40.62 + 57 + 13 + 55 =

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