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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 656 · 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. 1.12 × 8 =
  2. 2.47 × 8 =
  3. 3.32 × 8 =
  4. 4.13 × 8 =
  5. 5.14 × 4 =
  6. 6.27 × 8 =
  7. 7.73 × 8 =
  8. 8.54 × 8 =
  9. 9.13 × 8 =
  10. 10.66 × 4 =
  11. 11.93 × 4 =
  12. 12.143 × 4 =
  13. 13.106 × 4 =
  14. 14.106 × 4 =
  15. 15.109 × 4 =
  16. 16.48 × 8 =
  17. 17.123 × 4 =
  18. 18.17 × 4 =
  19. 19.28 × 8 =
  20. 20.19 × 8 =
  21. 21.66 × 8 =
  22. 22.41 × 4 =
  23. 23.54 × 4 =
  24. 24.54 × 4 =
  25. 25.15 × 8 =
  26. 26.69 × 4 =
  27. 27.66 × 8 =
  28. 28.51 × 8 =
  29. 29.54 × 8 =
  30. 30.13 × 8 =
  31. 31.30 × 8 =
  32. 32.22 × 8 =
  33. 33.95 × 4 =
  34. 34.77 × 4 =
  35. 35.73 × 8 =
  36. 36.70 × 4 =
  37. 37.153 × 4 =
  38. 38.54 × 8 =
  39. 39.35 × 8 =
  40. 40.21 × 4 =

Answer key

  1. 96
  2. 376
  3. 256
  4. 104
  5. 56
  6. 216
  7. 584
  8. 432
  9. 104
  10. 264
  11. 372
  12. 572
  13. 424
  14. 424
  15. 436
  16. 384
  17. 492
  18. 68
  19. 224
  20. 152
  21. 528
  22. 164
  23. 216
  24. 216
  25. 120
  26. 276
  27. 528
  28. 408
  29. 432
  30. 104
  31. 240
  32. 176
  33. 380
  34. 308
  35. 584
  36. 280
  37. 612
  38. 432
  39. 280
  40. 84

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