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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 448 · 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. 1.12 × 8 =
  2. 2.145 × 4 =
  3. 3.39 × 4 =
  4. 4.13 × 8 =
  5. 5.49 × 8 =
  6. 6.23 × 4 =
  7. 7.33 × 4 =
  8. 8.64 × 4 =
  9. 9.16 × 4 =
  10. 10.23 × 4 =
  11. 11.139 × 4 =
  12. 12.54 × 4 =
  13. 13.44 × 8 =
  14. 14.71 × 4 =
  15. 15.125 × 4 =
  16. 16.97 × 4 =
  17. 17.56 × 8 =
  18. 18.57 × 8 =
  19. 19.72 × 8 =
  20. 20.52 × 8 =
  21. 21.139 × 4 =
  22. 22.37 × 4 =
  23. 23.53 × 4 =
  24. 24.140 × 4 =
  25. 25.15 × 4 =
  26. 26.51 × 8 =
  27. 27.26 × 8 =
  28. 28.53 × 8 =
  29. 29.51 × 8 =
  30. 30.34 × 8 =
  31. 31.40 × 8 =
  32. 32.39 × 8 =
  33. 33.15 × 4 =
  34. 34.124 × 4 =
  35. 35.68 × 8 =
  36. 36.45 × 8 =
  37. 37.30 × 4 =
  38. 38.64 × 8 =
  39. 39.22 × 8 =
  40. 40.55 × 4 =

Answer key

  1. 96
  2. 580
  3. 156
  4. 104
  5. 392
  6. 92
  7. 132
  8. 256
  9. 64
  10. 92
  11. 556
  12. 216
  13. 352
  14. 284
  15. 500
  16. 388
  17. 448
  18. 456
  19. 576
  20. 416
  21. 556
  22. 148
  23. 212
  24. 560
  25. 60
  26. 408
  27. 208
  28. 424
  29. 408
  30. 272
  31. 320
  32. 312
  33. 60
  34. 496
  35. 544
  36. 360
  37. 120
  38. 512
  39. 176
  40. 220

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