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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 267 · 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. 1.24 + 61 + 30 + 56 =
  2. 2.48 + 42 + 72 + 33 =
  3. 3.47 + 34 + 20 + 25 =
  4. 4.37 + 25 + 29 + 66 =
  5. 5.21 + 75 + 30 + 73 =
  6. 6.42 + 12 + 23 + 22 =
  7. 7.56 + 28 + 63 + 55 =
  8. 8.86 + 36 + 88 + 45 =
  9. 9.44 + 57 + 13 + 18 =
  10. 10.31 + 88 + 66 + 79 =
  11. 11.55 + 79 + 79 + 56 =
  12. 12.66 + 88 + 25 + 15 =
  13. 13.53 + 48 + 68 + 14 =
  14. 14.68 + 64 + 73 + 56 =
  15. 15.13 + 56 + 18 + 23 =
  16. 16.84 + 51 + 12 + 59 =
  17. 17.19 + 51 + 59 + 45 =
  18. 18.27 + 56 + 30 + 60 =
  19. 19.17 + 56 + 41 + 11 =
  20. 20.16 + 48 + 40 + 57 =
  21. 21.20 + 53 + 61 + 33 =
  22. 22.53 + 27 + 20 + 84 =
  23. 23.78 + 52 + 16 + 82 =
  24. 24.41 + 58 + 84 + 25 =
  25. 25.67 + 58 + 73 + 54 =
  26. 26.56 + 51 + 66 + 84 =
  27. 27.89 + 68 + 79 + 12 =
  28. 28.41 + 69 + 19 + 81 =
  29. 29.52 + 68 + 20 + 16 =
  30. 30.62 + 19 + 81 + 86 =
  31. 31.34 + 56 + 35 + 55 =
  32. 32.34 + 18 + 60 + 30 =
  33. 33.53 + 45 + 80 + 42 =
  34. 34.33 + 62 + 50 + 54 =
  35. 35.40 + 69 + 70 + 58 =
  36. 36.60 + 89 + 44 + 74 =
  37. 37.49 + 27 + 70 + 29 =
  38. 38.74 + 59 + 73 + 53 =
  39. 39.30 + 60 + 79 + 23 =
  40. 40.42 + 27 + 15 + 79 =

Answer key

  1. 171
  2. 195
  3. 126
  4. 157
  5. 199
  6. 99
  7. 202
  8. 255
  9. 132
  10. 264
  11. 269
  12. 194
  13. 183
  14. 261
  15. 110
  16. 206
  17. 174
  18. 173
  19. 125
  20. 161
  21. 167
  22. 184
  23. 228
  24. 208
  25. 252
  26. 257
  27. 248
  28. 210
  29. 156
  30. 248
  31. 180
  32. 142
  33. 220
  34. 199
  35. 237
  36. 267
  37. 175
  38. 259
  39. 192
  40. 163

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