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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 582 · 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. 1.44 × 4 =
  2. 2.58 × 8 =
  3. 3.70 × 4 =
  4. 4.135 × 4 =
  5. 5.41 × 8 =
  6. 6.96 × 4 =
  7. 7.33 × 4 =
  8. 8.107 × 4 =
  9. 9.54 × 4 =
  10. 10.32 × 4 =
  11. 11.49 × 4 =
  12. 12.45 × 4 =
  13. 13.59 × 8 =
  14. 14.16 × 8 =
  15. 15.69 × 8 =
  16. 16.36 × 8 =
  17. 17.64 × 8 =
  18. 18.47 × 4 =
  19. 19.23 × 8 =
  20. 20.90 × 4 =
  21. 21.46 × 8 =
  22. 22.29 × 8 =
  23. 23.34 × 8 =
  24. 24.29 × 8 =
  25. 25.72 × 8 =
  26. 26.50 × 4 =
  27. 27.121 × 4 =
  28. 28.143 × 4 =
  29. 29.24 × 8 =
  30. 30.18 × 8 =
  31. 31.52 × 4 =
  32. 32.89 × 4 =
  33. 33.23 × 4 =
  34. 34.17 × 8 =
  35. 35.68 × 8 =
  36. 36.18 × 8 =
  37. 37.50 × 8 =
  38. 38.19 × 8 =
  39. 39.68 × 8 =
  40. 40.14 × 8 =

Answer key

  1. 176
  2. 464
  3. 280
  4. 540
  5. 328
  6. 384
  7. 132
  8. 428
  9. 216
  10. 128
  11. 196
  12. 180
  13. 472
  14. 128
  15. 552
  16. 288
  17. 512
  18. 188
  19. 184
  20. 360
  21. 368
  22. 232
  23. 272
  24. 232
  25. 576
  26. 200
  27. 484
  28. 572
  29. 192
  30. 144
  31. 208
  32. 356
  33. 92
  34. 136
  35. 544
  36. 144
  37. 400
  38. 152
  39. 544
  40. 112

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