Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 477 · 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. 1.84 + 41 + 20 + 76 =
2. 2.79 + 41 + 85 + 53 =
3. 3.12 + 82 + 20 + 25 =
4. 4.58 + 37 + 20 + 68 =
5. 5.36 + 51 + 22 + 74 =
6. 6.86 + 14 + 66 + 73 =
7. 7.21 + 72 + 50 + 32 =
8. 8.52 + 60 + 85 + 53 =
9. 9.83 + 33 + 17 + 16 =
10. 10.15 + 61 + 58 + 28 =
11. 11.54 + 57 + 75 + 42 =
12. 12.17 + 59 + 73 + 22 =
13. 13.58 + 70 + 74 + 22 =
14. 14.30 + 40 + 38 + 60 =
15. 15.22 + 85 + 26 + 35 =
16. 16.33 + 25 + 57 + 40 =
17. 17.31 + 49 + 28 + 45 =
18. 18.14 + 27 + 82 + 44 =
19. 19.67 + 23 + 61 + 52 =
20. 20.89 + 37 + 42 + 54 =
21. 21.73 + 63 + 35 + 32 =
22. 22.79 + 87 + 19 + 75 =
23. 23.48 + 43 + 52 + 59 =
24. 24.59 + 36 + 19 + 44 =
25. 25.42 + 76 + 58 + 14 =
26. 26.13 + 16 + 66 + 36 =
27. 27.73 + 80 + 68 + 52 =
28. 28.14 + 59 + 19 + 80 =
29. 29.72 + 43 + 53 + 18 =
30. 30.35 + 82 + 48 + 83 =
31. 31.82 + 58 + 17 + 60 =
32. 32.56 + 89 + 30 + 46 =
33. 33.39 + 81 + 34 + 49 =
34. 34.75 + 64 + 59 + 42 =
35. 35.63 + 46 + 29 + 79 =
36. 36.70 + 78 + 50 + 12 =
37. 37.50 + 38 + 15 + 65 =
38. 38.34 + 85 + 75 + 76 =
39. 39.55 + 12 + 86 + 27 =
40. 40.73 + 77 + 49 + 37 =

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