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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 678 · 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. 1.56 × 4 =
  2. 2.30 × 4 =
  3. 3.157 × 4 =
  4. 4.47 × 4 =
  5. 5.24 × 4 =
  6. 6.33 × 8 =
  7. 7.40 × 8 =
  8. 8.151 × 4 =
  9. 9.25 × 8 =
  10. 10.159 × 4 =
  11. 11.72 × 8 =
  12. 12.78 × 4 =
  13. 13.132 × 4 =
  14. 14.31 × 4 =
  15. 15.21 × 8 =
  16. 16.128 × 4 =
  17. 17.46 × 8 =
  18. 18.20 × 8 =
  19. 19.102 × 4 =
  20. 20.74 × 8 =
  21. 21.59 × 8 =
  22. 22.21 × 8 =
  23. 23.42 × 8 =
  24. 24.40 × 4 =
  25. 25.67 × 8 =
  26. 26.141 × 4 =
  27. 27.64 × 4 =
  28. 28.50 × 8 =
  29. 29.59 × 8 =
  30. 30.16 × 8 =
  31. 31.144 × 4 =
  32. 32.159 × 4 =
  33. 33.37 × 4 =
  34. 34.49 × 8 =
  35. 35.140 × 4 =
  36. 36.121 × 4 =
  37. 37.73 × 8 =
  38. 38.14 × 8 =
  39. 39.47 × 4 =
  40. 40.32 × 4 =

Answer key

  1. 224
  2. 120
  3. 628
  4. 188
  5. 96
  6. 264
  7. 320
  8. 604
  9. 200
  10. 636
  11. 576
  12. 312
  13. 528
  14. 124
  15. 168
  16. 512
  17. 368
  18. 160
  19. 408
  20. 592
  21. 472
  22. 168
  23. 336
  24. 160
  25. 536
  26. 564
  27. 256
  28. 400
  29. 472
  30. 128
  31. 576
  32. 636
  33. 148
  34. 392
  35. 560
  36. 484
  37. 584
  38. 112
  39. 188
  40. 128

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