Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 233 · 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. 1.71 + 75 + 24 + 44 =
2. 2.89 + 76 + 12 + 72 =
3. 3.68 + 72 + 60 + 13 =
4. 4.79 + 36 + 60 + 13 =
5. 5.39 + 24 + 67 + 85 =
6. 6.54 + 65 + 25 + 47 =
7. 7.34 + 64 + 33 + 64 =
8. 8.29 + 61 + 48 + 74 =
9. 9.83 + 22 + 11 + 59 =
10. 10.24 + 86 + 25 + 66 =
11. 11.14 + 37 + 20 + 31 =
12. 12.31 + 67 + 39 + 51 =
13. 13.82 + 19 + 55 + 56 =
14. 14.15 + 74 + 11 + 43 =
15. 15.46 + 45 + 51 + 44 =
16. 16.11 + 37 + 73 + 30 =
17. 17.27 + 22 + 83 + 47 =
18. 18.74 + 21 + 62 + 18 =
19. 19.74 + 61 + 14 + 60 =
20. 20.83 + 78 + 38 + 36 =
21. 21.40 + 73 + 26 + 50 =
22. 22.76 + 37 + 21 + 17 =
23. 23.83 + 69 + 50 + 89 =
24. 24.17 + 54 + 13 + 15 =
25. 25.15 + 69 + 17 + 42 =
26. 26.47 + 19 + 67 + 75 =
27. 27.25 + 52 + 12 + 26 =
28. 28.15 + 19 + 51 + 28 =
29. 29.68 + 41 + 75 + 12 =
30. 30.54 + 43 + 41 + 41 =
31. 31.78 + 46 + 12 + 67 =
32. 32.62 + 57 + 79 + 56 =
33. 33.79 + 11 + 27 + 22 =
34. 34.11 + 52 + 85 + 53 =
35. 35.41 + 69 + 58 + 16 =
36. 36.32 + 70 + 30 + 36 =
37. 37.62 + 51 + 34 + 74 =
38. 38.69 + 21 + 63 + 23 =
39. 39.15 + 44 + 41 + 72 =
40. 40.49 + 18 + 71 + 64 =

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