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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 537 · 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. 1.54 × 8 =
  2. 2.43 × 8 =
  3. 3.29 × 8 =
  4. 4.148 × 4 =
  5. 5.25 × 8 =
  6. 6.71 × 8 =
  7. 7.44 × 4 =
  8. 8.53 × 4 =
  9. 9.50 × 4 =
  10. 10.62 × 8 =
  11. 11.60 × 8 =
  12. 12.46 × 8 =
  13. 13.14 × 4 =
  14. 14.30 × 8 =
  15. 15.125 × 4 =
  16. 16.75 × 8 =
  17. 17.49 × 4 =
  18. 18.95 × 4 =
  19. 19.64 × 8 =
  20. 20.24 × 8 =
  21. 21.149 × 4 =
  22. 22.50 × 4 =
  23. 23.57 × 8 =
  24. 24.58 × 8 =
  25. 25.20 × 4 =
  26. 26.43 × 8 =
  27. 27.25 × 8 =
  28. 28.58 × 4 =
  29. 29.40 × 8 =
  30. 30.80 × 4 =
  31. 31.65 × 8 =
  32. 32.67 × 8 =
  33. 33.28 × 4 =
  34. 34.45 × 4 =
  35. 35.103 × 4 =
  36. 36.101 × 4 =
  37. 37.49 × 8 =
  38. 38.48 × 8 =
  39. 39.33 × 8 =
  40. 40.55 × 8 =

Answer key

  1. 432
  2. 344
  3. 232
  4. 592
  5. 200
  6. 568
  7. 176
  8. 212
  9. 200
  10. 496
  11. 480
  12. 368
  13. 56
  14. 240
  15. 500
  16. 600
  17. 196
  18. 380
  19. 512
  20. 192
  21. 596
  22. 200
  23. 456
  24. 464
  25. 80
  26. 344
  27. 200
  28. 232
  29. 320
  30. 320
  31. 520
  32. 536
  33. 112
  34. 180
  35. 412
  36. 404
  37. 392
  38. 384
  39. 264
  40. 440

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