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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 542 · 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. 1.125 × 4 =
  2. 2.48 × 4 =
  3. 3.104 × 4 =
  4. 4.98 × 4 =
  5. 5.29 × 4 =
  6. 6.66 × 8 =
  7. 7.64 × 4 =
  8. 8.91 × 4 =
  9. 9.107 × 4 =
  10. 10.153 × 4 =
  11. 11.30 × 4 =
  12. 12.33 × 4 =
  13. 13.17 × 8 =
  14. 14.33 × 4 =
  15. 15.147 × 4 =
  16. 16.58 × 8 =
  17. 17.69 × 8 =
  18. 18.24 × 4 =
  19. 19.58 × 4 =
  20. 20.53 × 4 =
  21. 21.83 × 4 =
  22. 22.34 × 4 =
  23. 23.75 × 4 =
  24. 24.126 × 4 =
  25. 25.65 × 4 =
  26. 26.43 × 8 =
  27. 27.34 × 8 =
  28. 28.98 × 4 =
  29. 29.81 × 4 =
  30. 30.65 × 4 =
  31. 31.126 × 4 =
  32. 32.49 × 4 =
  33. 33.53 × 4 =
  34. 34.18 × 8 =
  35. 35.159 × 4 =
  36. 36.35 × 8 =
  37. 37.39 × 8 =
  38. 38.54 × 8 =
  39. 39.13 × 8 =
  40. 40.138 × 4 =

Answer key

  1. 500
  2. 192
  3. 416
  4. 392
  5. 116
  6. 528
  7. 256
  8. 364
  9. 428
  10. 612
  11. 120
  12. 132
  13. 136
  14. 132
  15. 588
  16. 464
  17. 552
  18. 96
  19. 232
  20. 212
  21. 332
  22. 136
  23. 300
  24. 504
  25. 260
  26. 344
  27. 272
  28. 392
  29. 324
  30. 260
  31. 504
  32. 196
  33. 212
  34. 144
  35. 636
  36. 280
  37. 312
  38. 432
  39. 104
  40. 552

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