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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 622 · 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. 1.43 + 85 + 62 + 82 =
  2. 2.85 + 58 + 73 + 15 =
  3. 3.58 + 14 + 26 + 86 =
  4. 4.29 + 22 + 62 + 88 =
  5. 5.84 + 40 + 61 + 14 =
  6. 6.47 + 11 + 71 + 38 =
  7. 7.40 + 29 + 16 + 84 =
  8. 8.57 + 38 + 61 + 77 =
  9. 9.38 + 68 + 18 + 66 =
  10. 10.18 + 46 + 44 + 52 =
  11. 11.17 + 49 + 32 + 84 =
  12. 12.88 + 82 + 29 + 68 =
  13. 13.38 + 75 + 23 + 38 =
  14. 14.25 + 51 + 55 + 16 =
  15. 15.65 + 27 + 70 + 43 =
  16. 16.57 + 20 + 11 + 55 =
  17. 17.43 + 14 + 14 + 63 =
  18. 18.49 + 36 + 18 + 22 =
  19. 19.66 + 76 + 35 + 41 =
  20. 20.26 + 47 + 26 + 73 =
  21. 21.33 + 43 + 11 + 41 =
  22. 22.51 + 84 + 64 + 50 =
  23. 23.77 + 38 + 39 + 65 =
  24. 24.25 + 13 + 67 + 15 =
  25. 25.55 + 58 + 37 + 25 =
  26. 26.80 + 36 + 27 + 87 =
  27. 27.44 + 65 + 89 + 72 =
  28. 28.33 + 27 + 35 + 50 =
  29. 29.38 + 49 + 34 + 60 =
  30. 30.40 + 28 + 63 + 22 =
  31. 31.63 + 43 + 74 + 17 =
  32. 32.42 + 22 + 69 + 87 =
  33. 33.30 + 69 + 51 + 57 =
  34. 34.63 + 34 + 59 + 49 =
  35. 35.20 + 88 + 29 + 35 =
  36. 36.48 + 21 + 48 + 43 =
  37. 37.26 + 82 + 22 + 12 =
  38. 38.20 + 86 + 58 + 60 =
  39. 39.65 + 24 + 33 + 64 =
  40. 40.63 + 12 + 45 + 46 =

Answer key

  1. 272
  2. 231
  3. 184
  4. 201
  5. 199
  6. 167
  7. 169
  8. 233
  9. 190
  10. 160
  11. 182
  12. 267
  13. 174
  14. 147
  15. 205
  16. 143
  17. 134
  18. 125
  19. 218
  20. 172
  21. 128
  22. 249
  23. 219
  24. 120
  25. 175
  26. 230
  27. 270
  28. 145
  29. 181
  30. 153
  31. 197
  32. 220
  33. 207
  34. 205
  35. 172
  36. 160
  37. 142
  38. 224
  39. 186
  40. 166

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