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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 984 · 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. 1.137 × 4 =
  2. 2.151 × 4 =
  3. 3.23 × 4 =
  4. 4.18 × 8 =
  5. 5.14 × 8 =
  6. 6.66 × 4 =
  7. 7.159 × 4 =
  8. 8.82 × 4 =
  9. 9.120 × 4 =
  10. 10.49 × 4 =
  11. 11.41 × 8 =
  12. 12.62 × 8 =
  13. 13.14 × 4 =
  14. 14.94 × 4 =
  15. 15.24 × 8 =
  16. 16.22 × 8 =
  17. 17.47 × 8 =
  18. 18.22 × 4 =
  19. 19.16 × 8 =
  20. 20.13 × 8 =
  21. 21.89 × 4 =
  22. 22.142 × 4 =
  23. 23.125 × 4 =
  24. 24.68 × 8 =
  25. 25.88 × 4 =
  26. 26.47 × 4 =
  27. 27.47 × 8 =
  28. 28.120 × 4 =
  29. 29.40 × 8 =
  30. 30.52 × 4 =
  31. 31.108 × 4 =
  32. 32.157 × 4 =
  33. 33.54 × 4 =
  34. 34.27 × 8 =
  35. 35.30 × 8 =
  36. 36.51 × 8 =
  37. 37.139 × 4 =
  38. 38.74 × 8 =
  39. 39.41 × 4 =
  40. 40.70 × 8 =

Answer key

  1. 548
  2. 604
  3. 92
  4. 144
  5. 112
  6. 264
  7. 636
  8. 328
  9. 480
  10. 196
  11. 328
  12. 496
  13. 56
  14. 376
  15. 192
  16. 176
  17. 376
  18. 88
  19. 128
  20. 104
  21. 356
  22. 568
  23. 500
  24. 544
  25. 352
  26. 188
  27. 376
  28. 480
  29. 320
  30. 208
  31. 432
  32. 628
  33. 216
  34. 216
  35. 240
  36. 408
  37. 556
  38. 592
  39. 164
  40. 560

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