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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 211 · 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. 1.83 × 4 =
  2. 2.37 × 8 =
  3. 3.133 × 4 =
  4. 4.27 × 8 =
  5. 5.22 × 8 =
  6. 6.26 × 4 =
  7. 7.42 × 4 =
  8. 8.69 × 8 =
  9. 9.124 × 4 =
  10. 10.65 × 4 =
  11. 11.98 × 4 =
  12. 12.119 × 4 =
  13. 13.44 × 8 =
  14. 14.65 × 4 =
  15. 15.100 × 4 =
  16. 16.26 × 8 =
  17. 17.99 × 4 =
  18. 18.63 × 8 =
  19. 19.59 × 4 =
  20. 20.28 × 8 =
  21. 21.33 × 4 =
  22. 22.89 × 4 =
  23. 23.20 × 4 =
  24. 24.68 × 8 =
  25. 25.42 × 8 =
  26. 26.45 × 8 =
  27. 27.39 × 8 =
  28. 28.23 × 8 =
  29. 29.16 × 8 =
  30. 30.45 × 8 =
  31. 31.53 × 8 =
  32. 32.23 × 8 =
  33. 33.57 × 8 =
  34. 34.95 × 4 =
  35. 35.14 × 8 =
  36. 36.51 × 4 =
  37. 37.33 × 8 =
  38. 38.96 × 4 =
  39. 39.61 × 8 =
  40. 40.60 × 4 =

Answer key

  1. 332
  2. 296
  3. 532
  4. 216
  5. 176
  6. 104
  7. 168
  8. 552
  9. 496
  10. 260
  11. 392
  12. 476
  13. 352
  14. 260
  15. 400
  16. 208
  17. 396
  18. 504
  19. 236
  20. 224
  21. 132
  22. 356
  23. 80
  24. 544
  25. 336
  26. 360
  27. 312
  28. 184
  29. 128
  30. 360
  31. 424
  32. 184
  33. 456
  34. 380
  35. 112
  36. 204
  37. 264
  38. 384
  39. 488
  40. 240

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