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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 354 · 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. 1.19 + 38 + 49 + 26 =
  2. 2.75 + 14 + 13 + 63 =
  3. 3.84 + 67 + 68 + 74 =
  4. 4.26 + 24 + 69 + 20 =
  5. 5.78 + 14 + 27 + 33 =
  6. 6.30 + 25 + 57 + 84 =
  7. 7.48 + 17 + 63 + 73 =
  8. 8.15 + 89 + 50 + 60 =
  9. 9.84 + 39 + 43 + 13 =
  10. 10.15 + 63 + 19 + 23 =
  11. 11.81 + 44 + 18 + 15 =
  12. 12.19 + 39 + 58 + 77 =
  13. 13.38 + 60 + 84 + 24 =
  14. 14.12 + 48 + 22 + 35 =
  15. 15.70 + 11 + 31 + 37 =
  16. 16.29 + 21 + 42 + 58 =
  17. 17.49 + 16 + 13 + 51 =
  18. 18.53 + 32 + 62 + 66 =
  19. 19.77 + 19 + 37 + 81 =
  20. 20.26 + 79 + 43 + 85 =
  21. 21.49 + 68 + 21 + 35 =
  22. 22.32 + 77 + 18 + 18 =
  23. 23.86 + 71 + 65 + 42 =
  24. 24.15 + 83 + 33 + 42 =
  25. 25.68 + 77 + 40 + 44 =
  26. 26.54 + 87 + 58 + 55 =
  27. 27.14 + 60 + 28 + 66 =
  28. 28.75 + 62 + 80 + 30 =
  29. 29.27 + 66 + 34 + 55 =
  30. 30.61 + 56 + 33 + 44 =
  31. 31.36 + 53 + 81 + 83 =
  32. 32.59 + 48 + 29 + 88 =
  33. 33.68 + 89 + 69 + 78 =
  34. 34.50 + 22 + 15 + 48 =
  35. 35.75 + 88 + 65 + 52 =
  36. 36.26 + 69 + 53 + 41 =
  37. 37.59 + 73 + 52 + 53 =
  38. 38.74 + 25 + 52 + 74 =
  39. 39.35 + 12 + 51 + 31 =
  40. 40.74 + 31 + 46 + 45 =

Answer key

  1. 132
  2. 165
  3. 293
  4. 139
  5. 152
  6. 196
  7. 201
  8. 214
  9. 179
  10. 120
  11. 158
  12. 193
  13. 206
  14. 117
  15. 149
  16. 150
  17. 129
  18. 213
  19. 214
  20. 233
  21. 173
  22. 145
  23. 264
  24. 173
  25. 229
  26. 254
  27. 168
  28. 247
  29. 182
  30. 194
  31. 253
  32. 224
  33. 304
  34. 135
  35. 280
  36. 189
  37. 237
  38. 225
  39. 129
  40. 196

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