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Mental Addition Worksheet

Speed calculation lesson 5: Running totals · Set 964 · 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. 1.67 + 26 + 43 + 42 =
  2. 2.29 + 88 + 71 + 47 =
  3. 3.71 + 88 + 21 + 57 =
  4. 4.33 + 69 + 16 + 35 =
  5. 5.18 + 24 + 34 + 27 =
  6. 6.18 + 62 + 30 + 29 =
  7. 7.56 + 61 + 30 + 53 =
  8. 8.21 + 83 + 79 + 67 =
  9. 9.28 + 21 + 65 + 33 =
  10. 10.21 + 25 + 41 + 58 =
  11. 11.19 + 56 + 47 + 72 =
  12. 12.57 + 75 + 45 + 32 =
  13. 13.18 + 18 + 59 + 57 =
  14. 14.17 + 84 + 29 + 89 =
  15. 15.69 + 14 + 86 + 72 =
  16. 16.20 + 52 + 39 + 51 =
  17. 17.51 + 32 + 24 + 58 =
  18. 18.56 + 56 + 68 + 16 =
  19. 19.19 + 30 + 51 + 74 =
  20. 20.20 + 51 + 45 + 11 =
  21. 21.30 + 48 + 35 + 26 =
  22. 22.76 + 29 + 60 + 25 =
  23. 23.75 + 51 + 17 + 61 =
  24. 24.22 + 30 + 50 + 83 =
  25. 25.55 + 68 + 23 + 46 =
  26. 26.75 + 89 + 70 + 63 =
  27. 27.66 + 41 + 49 + 37 =
  28. 28.40 + 32 + 66 + 70 =
  29. 29.18 + 79 + 28 + 27 =
  30. 30.39 + 24 + 39 + 28 =
  31. 31.59 + 75 + 16 + 18 =
  32. 32.55 + 59 + 31 + 51 =
  33. 33.44 + 81 + 73 + 79 =
  34. 34.58 + 55 + 48 + 75 =
  35. 35.44 + 70 + 22 + 57 =
  36. 36.26 + 69 + 53 + 45 =
  37. 37.68 + 22 + 70 + 64 =
  38. 38.50 + 32 + 20 + 21 =
  39. 39.49 + 15 + 33 + 89 =
  40. 40.57 + 44 + 68 + 37 =

Answer key

  1. 178
  2. 235
  3. 237
  4. 153
  5. 103
  6. 139
  7. 200
  8. 250
  9. 147
  10. 145
  11. 194
  12. 209
  13. 152
  14. 219
  15. 241
  16. 162
  17. 165
  18. 196
  19. 174
  20. 127
  21. 139
  22. 190
  23. 204
  24. 185
  25. 192
  26. 297
  27. 193
  28. 208
  29. 152
  30. 130
  31. 168
  32. 196
  33. 277
  34. 236
  35. 193
  36. 193
  37. 224
  38. 123
  39. 186
  40. 206

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