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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 916 · 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. 1.19 × 8 =
  2. 2.49 × 8 =
  3. 3.47 × 4 =
  4. 4.51 × 8 =
  5. 5.55 × 8 =
  6. 6.82 × 4 =
  7. 7.36 × 8 =
  8. 8.27 × 8 =
  9. 9.64 × 4 =
  10. 10.59 × 8 =
  11. 11.43 × 4 =
  12. 12.24 × 8 =
  13. 13.108 × 4 =
  14. 14.48 × 4 =
  15. 15.63 × 4 =
  16. 16.113 × 4 =
  17. 17.34 × 8 =
  18. 18.34 × 8 =
  19. 19.14 × 8 =
  20. 20.135 × 4 =
  21. 21.58 × 4 =
  22. 22.46 × 4 =
  23. 23.50 × 8 =
  24. 24.31 × 8 =
  25. 25.38 × 8 =
  26. 26.47 × 4 =
  27. 27.62 × 8 =
  28. 28.51 × 8 =
  29. 29.17 × 8 =
  30. 30.13 × 4 =
  31. 31.131 × 4 =
  32. 32.42 × 8 =
  33. 33.38 × 8 =
  34. 34.110 × 4 =
  35. 35.44 × 4 =
  36. 36.55 × 8 =
  37. 37.67 × 8 =
  38. 38.69 × 8 =
  39. 39.66 × 4 =
  40. 40.23 × 4 =

Answer key

  1. 152
  2. 392
  3. 188
  4. 408
  5. 440
  6. 328
  7. 288
  8. 216
  9. 256
  10. 472
  11. 172
  12. 192
  13. 432
  14. 192
  15. 252
  16. 452
  17. 272
  18. 272
  19. 112
  20. 540
  21. 232
  22. 184
  23. 400
  24. 248
  25. 304
  26. 188
  27. 496
  28. 408
  29. 136
  30. 52
  31. 524
  32. 336
  33. 304
  34. 440
  35. 176
  36. 440
  37. 536
  38. 552
  39. 264
  40. 92

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