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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 294 · 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. 1.52 + 59 + 65 + 51 =
  2. 2.25 + 19 + 46 + 24 =
  3. 3.55 + 17 + 62 + 28 =
  4. 4.49 + 45 + 39 + 57 =
  5. 5.20 + 24 + 78 + 15 =
  6. 6.44 + 48 + 61 + 14 =
  7. 7.26 + 49 + 25 + 28 =
  8. 8.32 + 75 + 55 + 16 =
  9. 9.41 + 54 + 17 + 14 =
  10. 10.20 + 33 + 58 + 38 =
  11. 11.75 + 40 + 24 + 61 =
  12. 12.66 + 63 + 32 + 79 =
  13. 13.28 + 76 + 15 + 40 =
  14. 14.27 + 56 + 47 + 68 =
  15. 15.22 + 50 + 49 + 88 =
  16. 16.18 + 86 + 29 + 25 =
  17. 17.38 + 32 + 31 + 47 =
  18. 18.29 + 36 + 19 + 83 =
  19. 19.70 + 37 + 23 + 75 =
  20. 20.54 + 87 + 23 + 34 =
  21. 21.59 + 56 + 71 + 19 =
  22. 22.20 + 67 + 57 + 25 =
  23. 23.30 + 39 + 36 + 51 =
  24. 24.57 + 48 + 79 + 42 =
  25. 25.36 + 55 + 29 + 72 =
  26. 26.15 + 49 + 34 + 48 =
  27. 27.42 + 53 + 55 + 30 =
  28. 28.72 + 29 + 28 + 39 =
  29. 29.61 + 15 + 12 + 50 =
  30. 30.16 + 68 + 14 + 78 =
  31. 31.25 + 22 + 32 + 54 =
  32. 32.45 + 51 + 77 + 38 =
  33. 33.89 + 42 + 38 + 33 =
  34. 34.49 + 87 + 26 + 28 =
  35. 35.55 + 70 + 63 + 20 =
  36. 36.63 + 20 + 51 + 74 =
  37. 37.59 + 78 + 86 + 12 =
  38. 38.24 + 58 + 89 + 27 =
  39. 39.23 + 18 + 86 + 34 =
  40. 40.75 + 62 + 70 + 47 =

Answer key

  1. 227
  2. 114
  3. 162
  4. 190
  5. 137
  6. 167
  7. 128
  8. 178
  9. 126
  10. 149
  11. 200
  12. 240
  13. 159
  14. 198
  15. 209
  16. 158
  17. 148
  18. 167
  19. 205
  20. 198
  21. 205
  22. 169
  23. 156
  24. 226
  25. 192
  26. 146
  27. 180
  28. 168
  29. 138
  30. 176
  31. 133
  32. 211
  33. 202
  34. 190
  35. 208
  36. 208
  37. 235
  38. 198
  39. 161
  40. 254

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