Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 864 · 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. 1.27 + 29 + 67 + 29 =
2. 2.57 + 29 + 11 + 57 =
3. 3.21 + 51 + 37 + 68 =
4. 4.15 + 35 + 16 + 56 =
5. 5.57 + 14 + 84 + 81 =
6. 6.25 + 65 + 47 + 24 =
7. 7.22 + 37 + 37 + 45 =
8. 8.50 + 18 + 30 + 44 =
9. 9.29 + 30 + 19 + 73 =
10. 10.25 + 19 + 75 + 37 =
11. 11.37 + 28 + 35 + 27 =
12. 12.61 + 20 + 54 + 50 =
13. 13.64 + 24 + 21 + 62 =
14. 14.71 + 69 + 60 + 46 =
15. 15.34 + 80 + 23 + 64 =
16. 16.39 + 63 + 13 + 71 =
17. 17.66 + 32 + 16 + 70 =
18. 18.56 + 82 + 66 + 43 =
19. 19.44 + 55 + 80 + 15 =
20. 20.41 + 62 + 62 + 46 =
21. 21.11 + 37 + 56 + 48 =
22. 22.72 + 42 + 12 + 28 =
23. 23.67 + 12 + 60 + 65 =
24. 24.84 + 47 + 52 + 42 =
25. 25.13 + 21 + 40 + 47 =
26. 26.18 + 37 + 47 + 72 =
27. 27.13 + 29 + 61 + 75 =
28. 28.53 + 31 + 12 + 59 =
29. 29.31 + 52 + 28 + 49 =
30. 30.78 + 20 + 40 + 49 =
31. 31.75 + 65 + 59 + 44 =
32. 32.22 + 79 + 61 + 49 =
33. 33.47 + 89 + 86 + 79 =
34. 34.57 + 48 + 58 + 54 =
35. 35.85 + 37 + 29 + 39 =
36. 36.25 + 81 + 42 + 19 =
37. 37.51 + 43 + 52 + 89 =
38. 38.23 + 82 + 82 + 26 =
39. 39.39 + 71 + 14 + 11 =
40. 40.43 + 36 + 19 + 16 =

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