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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 108 · 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. 1.36 × 4 =
  2. 2.19 × 8 =
  3. 3.24 × 8 =
  4. 4.91 × 4 =
  5. 5.149 × 4 =
  6. 6.74 × 8 =
  7. 7.60 × 8 =
  8. 8.29 × 8 =
  9. 9.36 × 4 =
  10. 10.49 × 4 =
  11. 11.24 × 4 =
  12. 12.57 × 8 =
  13. 13.26 × 8 =
  14. 14.80 × 4 =
  15. 15.151 × 4 =
  16. 16.20 × 8 =
  17. 17.51 × 8 =
  18. 18.49 × 8 =
  19. 19.141 × 4 =
  20. 20.129 × 4 =
  21. 21.140 × 4 =
  22. 22.109 × 4 =
  23. 23.24 × 4 =
  24. 24.105 × 4 =
  25. 25.53 × 4 =
  26. 26.25 × 4 =
  27. 27.57 × 8 =
  28. 28.41 × 4 =
  29. 29.93 × 4 =
  30. 30.23 × 8 =
  31. 31.63 × 4 =
  32. 32.12 × 8 =
  33. 33.35 × 4 =
  34. 34.52 × 8 =
  35. 35.52 × 8 =
  36. 36.24 × 4 =
  37. 37.34 × 8 =
  38. 38.58 × 8 =
  39. 39.55 × 8 =
  40. 40.114 × 4 =

Answer key

  1. 144
  2. 152
  3. 192
  4. 364
  5. 596
  6. 592
  7. 480
  8. 232
  9. 144
  10. 196
  11. 96
  12. 456
  13. 208
  14. 320
  15. 604
  16. 160
  17. 408
  18. 392
  19. 564
  20. 516
  21. 560
  22. 436
  23. 96
  24. 420
  25. 212
  26. 100
  27. 456
  28. 164
  29. 372
  30. 184
  31. 252
  32. 96
  33. 140
  34. 416
  35. 416
  36. 96
  37. 272
  38. 464
  39. 440
  40. 456

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