Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 188 · 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. 1.38 + 47 + 19 + 89 =
2. 2.64 + 27 + 83 + 82 =
3. 3.65 + 30 + 15 + 48 =
4. 4.15 + 28 + 13 + 26 =
5. 5.58 + 63 + 64 + 12 =
6. 6.36 + 56 + 31 + 71 =
7. 7.16 + 57 + 80 + 20 =
8. 8.47 + 56 + 12 + 66 =
9. 9.29 + 40 + 51 + 70 =
10. 10.67 + 23 + 30 + 30 =
11. 11.19 + 24 + 59 + 60 =
12. 12.32 + 29 + 16 + 29 =
13. 13.56 + 22 + 30 + 67 =
14. 14.16 + 24 + 53 + 51 =
15. 15.28 + 32 + 54 + 52 =
16. 16.70 + 56 + 24 + 68 =
17. 17.61 + 55 + 81 + 22 =
18. 18.44 + 48 + 13 + 75 =
19. 19.38 + 80 + 57 + 14 =
20. 20.84 + 57 + 26 + 76 =
21. 21.47 + 13 + 40 + 20 =
22. 22.53 + 38 + 18 + 69 =
23. 23.80 + 40 + 65 + 79 =
24. 24.81 + 41 + 76 + 37 =
25. 25.26 + 85 + 70 + 54 =
26. 26.14 + 52 + 41 + 19 =
27. 27.27 + 12 + 69 + 38 =
28. 28.54 + 42 + 50 + 35 =
29. 29.54 + 12 + 47 + 73 =
30. 30.45 + 64 + 53 + 23 =
31. 31.63 + 29 + 11 + 23 =
32. 32.12 + 65 + 75 + 76 =
33. 33.67 + 45 + 23 + 28 =
34. 34.28 + 46 + 72 + 86 =
35. 35.29 + 17 + 87 + 65 =
36. 36.36 + 53 + 51 + 45 =
37. 37.55 + 79 + 68 + 49 =
38. 38.53 + 65 + 52 + 65 =
39. 39.22 + 39 + 45 + 77 =
40. 40.60 + 24 + 48 + 60 =

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