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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 888 · 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. 1.78 × 4 =
  2. 2.52 × 4 =
  3. 3.28 × 4 =
  4. 4.57 × 4 =
  5. 5.136 × 4 =
  6. 6.101 × 4 =
  7. 7.114 × 4 =
  8. 8.112 × 4 =
  9. 9.38 × 8 =
  10. 10.28 × 8 =
  11. 11.100 × 4 =
  12. 12.97 × 4 =
  13. 13.115 × 4 =
  14. 14.25 × 4 =
  15. 15.87 × 4 =
  16. 16.70 × 8 =
  17. 17.58 × 8 =
  18. 18.29 × 8 =
  19. 19.57 × 8 =
  20. 20.17 × 8 =
  21. 21.51 × 8 =
  22. 22.61 × 8 =
  23. 23.119 × 4 =
  24. 24.28 × 8 =
  25. 25.19 × 8 =
  26. 26.16 × 4 =
  27. 27.48 × 8 =
  28. 28.98 × 4 =
  29. 29.61 × 8 =
  30. 30.67 × 8 =
  31. 31.31 × 8 =
  32. 32.86 × 4 =
  33. 33.14 × 8 =
  34. 34.103 × 4 =
  35. 35.57 × 8 =
  36. 36.60 × 4 =
  37. 37.59 × 4 =
  38. 38.109 × 4 =
  39. 39.61 × 8 =
  40. 40.74 × 8 =

Answer key

  1. 312
  2. 208
  3. 112
  4. 228
  5. 544
  6. 404
  7. 456
  8. 448
  9. 304
  10. 224
  11. 400
  12. 388
  13. 460
  14. 100
  15. 348
  16. 560
  17. 464
  18. 232
  19. 456
  20. 136
  21. 408
  22. 488
  23. 476
  24. 224
  25. 152
  26. 64
  27. 384
  28. 392
  29. 488
  30. 536
  31. 248
  32. 344
  33. 112
  34. 412
  35. 456
  36. 240
  37. 236
  38. 436
  39. 488
  40. 592

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