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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 601 · 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. 1.48 × 8 =
  2. 2.60 × 4 =
  3. 3.44 × 4 =
  4. 4.63 × 8 =
  5. 5.53 × 8 =
  6. 6.70 × 8 =
  7. 7.64 × 8 =
  8. 8.31 × 4 =
  9. 9.74 × 8 =
  10. 10.49 × 4 =
  11. 11.17 × 8 =
  12. 12.54 × 8 =
  13. 13.60 × 8 =
  14. 14.25 × 4 =
  15. 15.12 × 8 =
  16. 16.98 × 4 =
  17. 17.40 × 8 =
  18. 18.19 × 8 =
  19. 19.112 × 4 =
  20. 20.70 × 8 =
  21. 21.42 × 8 =
  22. 22.21 × 8 =
  23. 23.41 × 8 =
  24. 24.83 × 4 =
  25. 25.38 × 8 =
  26. 26.145 × 4 =
  27. 27.63 × 8 =
  28. 28.117 × 4 =
  29. 29.14 × 8 =
  30. 30.67 × 4 =
  31. 31.31 × 8 =
  32. 32.35 × 8 =
  33. 33.54 × 4 =
  34. 34.22 × 4 =
  35. 35.84 × 4 =
  36. 36.58 × 8 =
  37. 37.73 × 4 =
  38. 38.33 × 8 =
  39. 39.92 × 4 =
  40. 40.38 × 8 =

Answer key

  1. 384
  2. 240
  3. 176
  4. 504
  5. 424
  6. 560
  7. 512
  8. 124
  9. 592
  10. 196
  11. 136
  12. 432
  13. 480
  14. 100
  15. 96
  16. 392
  17. 320
  18. 152
  19. 448
  20. 560
  21. 336
  22. 168
  23. 328
  24. 332
  25. 304
  26. 580
  27. 504
  28. 468
  29. 112
  30. 268
  31. 248
  32. 280
  33. 216
  34. 88
  35. 336
  36. 464
  37. 292
  38. 264
  39. 368
  40. 304

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