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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 935 · 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. 1.121 × 4 =
  2. 2.62 × 4 =
  3. 3.33 × 4 =
  4. 4.104 × 4 =
  5. 5.53 × 8 =
  6. 6.73 × 8 =
  7. 7.81 × 4 =
  8. 8.96 × 4 =
  9. 9.64 × 8 =
  10. 10.58 × 8 =
  11. 11.99 × 4 =
  12. 12.24 × 8 =
  13. 13.118 × 4 =
  14. 14.56 × 4 =
  15. 15.45 × 4 =
  16. 16.26 × 8 =
  17. 17.149 × 4 =
  18. 18.39 × 4 =
  19. 19.68 × 8 =
  20. 20.133 × 4 =
  21. 21.93 × 4 =
  22. 22.40 × 8 =
  23. 23.36 × 8 =
  24. 24.126 × 4 =
  25. 25.128 × 4 =
  26. 26.18 × 8 =
  27. 27.58 × 4 =
  28. 28.70 × 4 =
  29. 29.74 × 8 =
  30. 30.40 × 4 =
  31. 31.152 × 4 =
  32. 32.14 × 4 =
  33. 33.50 × 4 =
  34. 34.56 × 8 =
  35. 35.98 × 4 =
  36. 36.62 × 8 =
  37. 37.30 × 8 =
  38. 38.18 × 4 =
  39. 39.45 × 8 =
  40. 40.58 × 4 =

Answer key

  1. 484
  2. 248
  3. 132
  4. 416
  5. 424
  6. 584
  7. 324
  8. 384
  9. 512
  10. 464
  11. 396
  12. 192
  13. 472
  14. 224
  15. 180
  16. 208
  17. 596
  18. 156
  19. 544
  20. 532
  21. 372
  22. 320
  23. 288
  24. 504
  25. 512
  26. 144
  27. 232
  28. 280
  29. 592
  30. 160
  31. 608
  32. 56
  33. 200
  34. 448
  35. 392
  36. 496
  37. 240
  38. 72
  39. 360
  40. 232

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