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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 757 · 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. 1.67 × 4 =
  2. 2.27 × 8 =
  3. 3.55 × 8 =
  4. 4.62 × 8 =
  5. 5.98 × 4 =
  6. 6.52 × 4 =
  7. 7.55 × 8 =
  8. 8.26 × 8 =
  9. 9.50 × 4 =
  10. 10.44 × 8 =
  11. 11.55 × 8 =
  12. 12.128 × 4 =
  13. 13.22 × 8 =
  14. 14.27 × 4 =
  15. 15.134 × 4 =
  16. 16.21 × 8 =
  17. 17.136 × 4 =
  18. 18.17 × 8 =
  19. 19.75 × 8 =
  20. 20.30 × 4 =
  21. 21.134 × 4 =
  22. 22.27 × 8 =
  23. 23.68 × 4 =
  24. 24.66 × 4 =
  25. 25.28 × 4 =
  26. 26.45 × 4 =
  27. 27.55 × 8 =
  28. 28.118 × 4 =
  29. 29.98 × 4 =
  30. 30.81 × 4 =
  31. 31.151 × 4 =
  32. 32.25 × 8 =
  33. 33.49 × 4 =
  34. 34.45 × 8 =
  35. 35.35 × 8 =
  36. 36.143 × 4 =
  37. 37.102 × 4 =
  38. 38.74 × 4 =
  39. 39.124 × 4 =
  40. 40.47 × 8 =

Answer key

  1. 268
  2. 216
  3. 440
  4. 496
  5. 392
  6. 208
  7. 440
  8. 208
  9. 200
  10. 352
  11. 440
  12. 512
  13. 176
  14. 108
  15. 536
  16. 168
  17. 544
  18. 136
  19. 600
  20. 120
  21. 536
  22. 216
  23. 272
  24. 264
  25. 112
  26. 180
  27. 440
  28. 472
  29. 392
  30. 324
  31. 604
  32. 200
  33. 196
  34. 360
  35. 280
  36. 572
  37. 408
  38. 296
  39. 496
  40. 376

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