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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 254 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.83 + 67 + 17 + 47 =
  2. 2.56 + 17 + 38 + 37 =
  3. 3.25 + 70 + 85 + 22 =
  4. 4.70 + 22 + 61 + 45 =
  5. 5.12 + 21 + 48 + 34 =
  6. 6.68 + 54 + 22 + 41 =
  7. 7.26 + 89 + 88 + 52 =
  8. 8.38 + 89 + 25 + 21 =
  9. 9.60 + 45 + 89 + 58 =
  10. 10.18 + 22 + 48 + 53 =
  11. 11.33 + 20 + 79 + 81 =
  12. 12.33 + 53 + 63 + 75 =
  13. 13.30 + 37 + 53 + 38 =
  14. 14.35 + 73 + 38 + 19 =
  15. 15.57 + 37 + 80 + 88 =
  16. 16.34 + 31 + 86 + 21 =
  17. 17.73 + 65 + 32 + 75 =
  18. 18.88 + 50 + 66 + 40 =
  19. 19.40 + 12 + 82 + 22 =
  20. 20.35 + 32 + 62 + 43 =
  21. 21.75 + 20 + 47 + 84 =
  22. 22.18 + 54 + 54 + 43 =
  23. 23.13 + 54 + 49 + 26 =
  24. 24.87 + 30 + 60 + 79 =
  25. 25.15 + 76 + 42 + 17 =
  26. 26.42 + 13 + 25 + 72 =
  27. 27.76 + 63 + 36 + 28 =
  28. 28.45 + 64 + 11 + 60 =
  29. 29.47 + 18 + 59 + 56 =
  30. 30.22 + 27 + 61 + 69 =
  31. 31.74 + 36 + 75 + 51 =
  32. 32.71 + 59 + 35 + 40 =
  33. 33.15 + 63 + 64 + 27 =
  34. 34.62 + 11 + 27 + 68 =
  35. 35.56 + 60 + 52 + 65 =
  36. 36.85 + 67 + 66 + 81 =
  37. 37.65 + 69 + 70 + 14 =
  38. 38.53 + 28 + 78 + 66 =
  39. 39.51 + 52 + 42 + 12 =
  40. 40.34 + 24 + 17 + 20 =

Answer key

  1. 214
  2. 148
  3. 202
  4. 198
  5. 115
  6. 185
  7. 255
  8. 173
  9. 252
  10. 141
  11. 213
  12. 224
  13. 158
  14. 165
  15. 262
  16. 172
  17. 245
  18. 244
  19. 156
  20. 172
  21. 226
  22. 169
  23. 142
  24. 256
  25. 150
  26. 152
  27. 203
  28. 180
  29. 180
  30. 179
  31. 236
  32. 205
  33. 169
  34. 168
  35. 233
  36. 299
  37. 218
  38. 225
  39. 157
  40. 95

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