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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 607 · 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. 1.27 × 8 =
  2. 2.71 × 8 =
  3. 3.15 × 8 =
  4. 4.122 × 4 =
  5. 5.63 × 4 =
  6. 6.59 × 8 =
  7. 7.65 × 8 =
  8. 8.19 × 4 =
  9. 9.71 × 4 =
  10. 10.22 × 8 =
  11. 11.75 × 4 =
  12. 12.120 × 4 =
  13. 13.107 × 4 =
  14. 14.75 × 8 =
  15. 15.53 × 8 =
  16. 16.15 × 8 =
  17. 17.34 × 8 =
  18. 18.112 × 4 =
  19. 19.18 × 8 =
  20. 20.50 × 4 =
  21. 21.24 × 8 =
  22. 22.71 × 8 =
  23. 23.68 × 8 =
  24. 24.83 × 4 =
  25. 25.70 × 8 =
  26. 26.110 × 4 =
  27. 27.68 × 8 =
  28. 28.47 × 4 =
  29. 29.13 × 4 =
  30. 30.54 × 4 =
  31. 31.33 × 8 =
  32. 32.15 × 8 =
  33. 33.16 × 8 =
  34. 34.88 × 4 =
  35. 35.24 × 4 =
  36. 36.41 × 4 =
  37. 37.70 × 8 =
  38. 38.55 × 8 =
  39. 39.18 × 8 =
  40. 40.60 × 8 =

Answer key

  1. 216
  2. 568
  3. 120
  4. 488
  5. 252
  6. 472
  7. 520
  8. 76
  9. 284
  10. 176
  11. 300
  12. 480
  13. 428
  14. 600
  15. 424
  16. 120
  17. 272
  18. 448
  19. 144
  20. 200
  21. 192
  22. 568
  23. 544
  24. 332
  25. 560
  26. 440
  27. 544
  28. 188
  29. 52
  30. 216
  31. 264
  32. 120
  33. 128
  34. 352
  35. 96
  36. 164
  37. 560
  38. 440
  39. 144
  40. 480

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