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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 783 · 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. 1.75 + 64 + 48 + 85 =
  2. 2.28 + 16 + 38 + 80 =
  3. 3.74 + 32 + 86 + 54 =
  4. 4.74 + 49 + 31 + 74 =
  5. 5.32 + 58 + 37 + 69 =
  6. 6.54 + 20 + 81 + 58 =
  7. 7.55 + 17 + 53 + 76 =
  8. 8.70 + 69 + 59 + 83 =
  9. 9.20 + 56 + 37 + 56 =
  10. 10.80 + 53 + 19 + 63 =
  11. 11.13 + 47 + 89 + 13 =
  12. 12.46 + 25 + 59 + 20 =
  13. 13.47 + 15 + 24 + 50 =
  14. 14.40 + 61 + 13 + 26 =
  15. 15.69 + 59 + 88 + 17 =
  16. 16.52 + 71 + 54 + 79 =
  17. 17.82 + 77 + 51 + 86 =
  18. 18.22 + 26 + 87 + 32 =
  19. 19.15 + 56 + 37 + 79 =
  20. 20.18 + 57 + 38 + 17 =
  21. 21.30 + 87 + 51 + 34 =
  22. 22.25 + 89 + 86 + 82 =
  23. 23.25 + 23 + 33 + 45 =
  24. 24.20 + 40 + 13 + 33 =
  25. 25.22 + 25 + 56 + 31 =
  26. 26.30 + 37 + 40 + 65 =
  27. 27.21 + 54 + 77 + 34 =
  28. 28.74 + 73 + 81 + 19 =
  29. 29.24 + 49 + 47 + 53 =
  30. 30.57 + 86 + 83 + 88 =
  31. 31.65 + 51 + 77 + 84 =
  32. 32.76 + 79 + 59 + 67 =
  33. 33.31 + 85 + 18 + 60 =
  34. 34.50 + 15 + 23 + 65 =
  35. 35.18 + 80 + 41 + 39 =
  36. 36.78 + 30 + 47 + 50 =
  37. 37.74 + 71 + 77 + 62 =
  38. 38.19 + 89 + 25 + 38 =
  39. 39.46 + 78 + 68 + 71 =
  40. 40.35 + 61 + 24 + 32 =

Answer key

  1. 272
  2. 162
  3. 246
  4. 228
  5. 196
  6. 213
  7. 201
  8. 281
  9. 169
  10. 215
  11. 162
  12. 150
  13. 136
  14. 140
  15. 233
  16. 256
  17. 296
  18. 167
  19. 187
  20. 130
  21. 202
  22. 282
  23. 126
  24. 106
  25. 134
  26. 172
  27. 186
  28. 247
  29. 173
  30. 314
  31. 277
  32. 281
  33. 194
  34. 153
  35. 178
  36. 205
  37. 284
  38. 171
  39. 263
  40. 152

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