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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 737 · 40 questions
TalentJR

The fast method (Double up): × 4: double, then double again. × 8: double three times. To double a big number, double the tens and the ones separately and add: double 37 = 60 + 14 = 74.

NameDateTime takenScore ___ / 40
  1. 1.27 × 8 =
  2. 2.26 × 8 =
  3. 3.24 × 8 =
  4. 4.25 × 4 =
  5. 5.73 × 4 =
  6. 6.71 × 8 =
  7. 7.12 × 8 =
  8. 8.13 × 4 =
  9. 9.70 × 8 =
  10. 10.46 × 8 =
  11. 11.80 × 4 =
  12. 12.160 × 4 =
  13. 13.17 × 8 =
  14. 14.39 × 8 =
  15. 15.31 × 4 =
  16. 16.36 × 8 =
  17. 17.17 × 8 =
  18. 18.17 × 4 =
  19. 19.84 × 4 =
  20. 20.67 × 8 =
  21. 21.156 × 4 =
  22. 22.152 × 4 =
  23. 23.77 × 4 =
  24. 24.67 × 8 =
  25. 25.95 × 4 =
  26. 26.19 × 4 =
  27. 27.30 × 8 =
  28. 28.47 × 4 =
  29. 29.21 × 4 =
  30. 30.19 × 8 =
  31. 31.80 × 4 =
  32. 32.20 × 4 =
  33. 33.127 × 4 =
  34. 34.147 × 4 =
  35. 35.14 × 8 =
  36. 36.89 × 4 =
  37. 37.45 × 4 =
  38. 38.37 × 8 =
  39. 39.20 × 8 =
  40. 40.40 × 8 =

Answer key

  1. 216
  2. 208
  3. 192
  4. 100
  5. 292
  6. 568
  7. 96
  8. 52
  9. 560
  10. 368
  11. 320
  12. 640
  13. 136
  14. 312
  15. 124
  16. 288
  17. 136
  18. 68
  19. 336
  20. 536
  21. 624
  22. 608
  23. 308
  24. 536
  25. 380
  26. 76
  27. 240
  28. 188
  29. 84
  30. 152
  31. 320
  32. 80
  33. 508
  34. 588
  35. 112
  36. 356
  37. 180
  38. 296
  39. 160
  40. 320

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