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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 701 · 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. 1.111 × 4 =
  2. 2.134 × 4 =
  3. 3.80 × 4 =
  4. 4.13 × 8 =
  5. 5.52 × 8 =
  6. 6.24 × 4 =
  7. 7.92 × 4 =
  8. 8.64 × 4 =
  9. 9.75 × 4 =
  10. 10.17 × 8 =
  11. 11.66 × 4 =
  12. 12.41 × 4 =
  13. 13.30 × 8 =
  14. 14.22 × 8 =
  15. 15.32 × 4 =
  16. 16.76 × 4 =
  17. 17.90 × 4 =
  18. 18.111 × 4 =
  19. 19.92 × 4 =
  20. 20.43 × 4 =
  21. 21.142 × 4 =
  22. 22.27 × 8 =
  23. 23.38 × 8 =
  24. 24.49 × 8 =
  25. 25.139 × 4 =
  26. 26.67 × 8 =
  27. 27.30 × 8 =
  28. 28.33 × 8 =
  29. 29.32 × 8 =
  30. 30.22 × 8 =
  31. 31.75 × 8 =
  32. 32.44 × 8 =
  33. 33.15 × 8 =
  34. 34.72 × 8 =
  35. 35.130 × 4 =
  36. 36.79 × 4 =
  37. 37.24 × 4 =
  38. 38.55 × 8 =
  39. 39.34 × 8 =
  40. 40.74 × 8 =

Answer key

  1. 444
  2. 536
  3. 320
  4. 104
  5. 416
  6. 96
  7. 368
  8. 256
  9. 300
  10. 136
  11. 264
  12. 164
  13. 240
  14. 176
  15. 128
  16. 304
  17. 360
  18. 444
  19. 368
  20. 172
  21. 568
  22. 216
  23. 304
  24. 392
  25. 556
  26. 536
  27. 240
  28. 264
  29. 256
  30. 176
  31. 600
  32. 352
  33. 120
  34. 576
  35. 520
  36. 316
  37. 96
  38. 440
  39. 272
  40. 592

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