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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 813 · 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. 1.58 × 8 =
  2. 2.25 × 8 =
  3. 3.52 × 4 =
  4. 4.33 × 4 =
  5. 5.142 × 4 =
  6. 6.44 × 8 =
  7. 7.35 × 8 =
  8. 8.27 × 8 =
  9. 9.125 × 4 =
  10. 10.50 × 8 =
  11. 11.63 × 8 =
  12. 12.13 × 8 =
  13. 13.59 × 4 =
  14. 14.127 × 4 =
  15. 15.19 × 8 =
  16. 16.13 × 4 =
  17. 17.22 × 8 =
  18. 18.145 × 4 =
  19. 19.151 × 4 =
  20. 20.130 × 4 =
  21. 21.23 × 4 =
  22. 22.57 × 8 =
  23. 23.16 × 4 =
  24. 24.65 × 8 =
  25. 25.48 × 4 =
  26. 26.19 × 8 =
  27. 27.69 × 8 =
  28. 28.37 × 8 =
  29. 29.157 × 4 =
  30. 30.125 × 4 =
  31. 31.44 × 4 =
  32. 32.129 × 4 =
  33. 33.107 × 4 =
  34. 34.90 × 4 =
  35. 35.51 × 8 =
  36. 36.39 × 4 =
  37. 37.39 × 8 =
  38. 38.46 × 4 =
  39. 39.46 × 8 =
  40. 40.19 × 8 =

Answer key

  1. 464
  2. 200
  3. 208
  4. 132
  5. 568
  6. 352
  7. 280
  8. 216
  9. 500
  10. 400
  11. 504
  12. 104
  13. 236
  14. 508
  15. 152
  16. 52
  17. 176
  18. 580
  19. 604
  20. 520
  21. 92
  22. 456
  23. 64
  24. 520
  25. 192
  26. 152
  27. 552
  28. 296
  29. 628
  30. 500
  31. 176
  32. 516
  33. 428
  34. 360
  35. 408
  36. 156
  37. 312
  38. 184
  39. 368
  40. 152

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