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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 961 · 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. 1.74 × 8 =
  2. 2.48 × 8 =
  3. 3.106 × 4 =
  4. 4.55 × 8 =
  5. 5.75 × 8 =
  6. 6.61 × 8 =
  7. 7.38 × 4 =
  8. 8.74 × 8 =
  9. 9.45 × 8 =
  10. 10.39 × 8 =
  11. 11.54 × 4 =
  12. 12.21 × 8 =
  13. 13.63 × 4 =
  14. 14.37 × 4 =
  15. 15.47 × 8 =
  16. 16.14 × 8 =
  17. 17.70 × 8 =
  18. 18.41 × 8 =
  19. 19.20 × 8 =
  20. 20.107 × 4 =
  21. 21.45 × 8 =
  22. 22.64 × 8 =
  23. 23.27 × 8 =
  24. 24.87 × 4 =
  25. 25.51 × 8 =
  26. 26.41 × 8 =
  27. 27.45 × 8 =
  28. 28.33 × 8 =
  29. 29.68 × 8 =
  30. 30.37 × 4 =
  31. 31.29 × 4 =
  32. 32.42 × 8 =
  33. 33.24 × 8 =
  34. 34.21 × 8 =
  35. 35.48 × 8 =
  36. 36.137 × 4 =
  37. 37.59 × 8 =
  38. 38.29 × 4 =
  39. 39.29 × 8 =
  40. 40.60 × 8 =

Answer key

  1. 592
  2. 384
  3. 424
  4. 440
  5. 600
  6. 488
  7. 152
  8. 592
  9. 360
  10. 312
  11. 216
  12. 168
  13. 252
  14. 148
  15. 376
  16. 112
  17. 560
  18. 328
  19. 160
  20. 428
  21. 360
  22. 512
  23. 216
  24. 348
  25. 408
  26. 328
  27. 360
  28. 264
  29. 544
  30. 148
  31. 116
  32. 336
  33. 192
  34. 168
  35. 384
  36. 548
  37. 472
  38. 116
  39. 232
  40. 480

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