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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 453 · 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. 1.28 × 8 =
  2. 2.53 × 8 =
  3. 3.42 × 4 =
  4. 4.99 × 4 =
  5. 5.13 × 8 =
  6. 6.22 × 4 =
  7. 7.67 × 8 =
  8. 8.36 × 8 =
  9. 9.70 × 8 =
  10. 10.42 × 4 =
  11. 11.131 × 4 =
  12. 12.26 × 4 =
  13. 13.89 × 4 =
  14. 14.75 × 8 =
  15. 15.42 × 8 =
  16. 16.71 × 4 =
  17. 17.71 × 4 =
  18. 18.49 × 8 =
  19. 19.80 × 4 =
  20. 20.141 × 4 =
  21. 21.69 × 8 =
  22. 22.35 × 8 =
  23. 23.17 × 4 =
  24. 24.21 × 8 =
  25. 25.152 × 4 =
  26. 26.148 × 4 =
  27. 27.102 × 4 =
  28. 28.71 × 8 =
  29. 29.91 × 4 =
  30. 30.143 × 4 =
  31. 31.60 × 4 =
  32. 32.27 × 4 =
  33. 33.66 × 8 =
  34. 34.30 × 8 =
  35. 35.46 × 4 =
  36. 36.70 × 4 =
  37. 37.28 × 4 =
  38. 38.43 × 8 =
  39. 39.82 × 4 =
  40. 40.153 × 4 =

Answer key

  1. 224
  2. 424
  3. 168
  4. 396
  5. 104
  6. 88
  7. 536
  8. 288
  9. 560
  10. 168
  11. 524
  12. 104
  13. 356
  14. 600
  15. 336
  16. 284
  17. 284
  18. 392
  19. 320
  20. 564
  21. 552
  22. 280
  23. 68
  24. 168
  25. 608
  26. 592
  27. 408
  28. 568
  29. 364
  30. 572
  31. 240
  32. 108
  33. 528
  34. 240
  35. 184
  36. 280
  37. 112
  38. 344
  39. 328
  40. 612

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