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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 553 · 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. 1.39 × 8 =
  2. 2.149 × 4 =
  3. 3.145 × 4 =
  4. 4.73 × 4 =
  5. 5.75 × 8 =
  6. 6.73 × 4 =
  7. 7.24 × 4 =
  8. 8.101 × 4 =
  9. 9.35 × 8 =
  10. 10.52 × 4 =
  11. 11.39 × 8 =
  12. 12.31 × 8 =
  13. 13.158 × 4 =
  14. 14.27 × 8 =
  15. 15.54 × 4 =
  16. 16.22 × 8 =
  17. 17.75 × 4 =
  18. 18.71 × 8 =
  19. 19.152 × 4 =
  20. 20.52 × 8 =
  21. 21.33 × 8 =
  22. 22.19 × 8 =
  23. 23.15 × 8 =
  24. 24.45 × 4 =
  25. 25.53 × 8 =
  26. 26.32 × 8 =
  27. 27.31 × 8 =
  28. 28.152 × 4 =
  29. 29.18 × 8 =
  30. 30.38 × 4 =
  31. 31.147 × 4 =
  32. 32.56 × 8 =
  33. 33.45 × 8 =
  34. 34.31 × 4 =
  35. 35.46 × 8 =
  36. 36.86 × 4 =
  37. 37.59 × 4 =
  38. 38.15 × 8 =
  39. 39.153 × 4 =
  40. 40.16 × 4 =

Answer key

  1. 312
  2. 596
  3. 580
  4. 292
  5. 600
  6. 292
  7. 96
  8. 404
  9. 280
  10. 208
  11. 312
  12. 248
  13. 632
  14. 216
  15. 216
  16. 176
  17. 300
  18. 568
  19. 608
  20. 416
  21. 264
  22. 152
  23. 120
  24. 180
  25. 424
  26. 256
  27. 248
  28. 608
  29. 144
  30. 152
  31. 588
  32. 448
  33. 360
  34. 124
  35. 368
  36. 344
  37. 236
  38. 120
  39. 612
  40. 64

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