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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 176 · 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. 1.32 × 8 =
  2. 2.22 × 4 =
  3. 3.55 × 4 =
  4. 4.46 × 4 =
  5. 5.59 × 8 =
  6. 6.18 × 8 =
  7. 7.90 × 4 =
  8. 8.100 × 4 =
  9. 9.47 × 8 =
  10. 10.27 × 8 =
  11. 11.108 × 4 =
  12. 12.38 × 8 =
  13. 13.12 × 8 =
  14. 14.43 × 8 =
  15. 15.20 × 8 =
  16. 16.45 × 4 =
  17. 17.23 × 4 =
  18. 18.122 × 4 =
  19. 19.112 × 4 =
  20. 20.72 × 4 =
  21. 21.38 × 8 =
  22. 22.47 × 4 =
  23. 23.41 × 4 =
  24. 24.51 × 8 =
  25. 25.101 × 4 =
  26. 26.101 × 4 =
  27. 27.70 × 4 =
  28. 28.33 × 4 =
  29. 29.62 × 8 =
  30. 30.53 × 8 =
  31. 31.15 × 8 =
  32. 32.61 × 8 =
  33. 33.68 × 8 =
  34. 34.155 × 4 =
  35. 35.34 × 8 =
  36. 36.122 × 4 =
  37. 37.53 × 8 =
  38. 38.44 × 4 =
  39. 39.72 × 8 =
  40. 40.20 × 8 =

Answer key

  1. 256
  2. 88
  3. 220
  4. 184
  5. 472
  6. 144
  7. 360
  8. 400
  9. 376
  10. 216
  11. 432
  12. 304
  13. 96
  14. 344
  15. 160
  16. 180
  17. 92
  18. 488
  19. 448
  20. 288
  21. 304
  22. 188
  23. 164
  24. 408
  25. 404
  26. 404
  27. 280
  28. 132
  29. 496
  30. 424
  31. 120
  32. 488
  33. 544
  34. 620
  35. 272
  36. 488
  37. 424
  38. 176
  39. 576
  40. 160

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