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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 968 · 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. 1.106 × 4 =
  2. 2.12 × 8 =
  3. 3.47 × 8 =
  4. 4.54 × 8 =
  5. 5.46 × 4 =
  6. 6.112 × 4 =
  7. 7.63 × 8 =
  8. 8.64 × 8 =
  9. 9.25 × 8 =
  10. 10.44 × 4 =
  11. 11.53 × 4 =
  12. 12.107 × 4 =
  13. 13.58 × 8 =
  14. 14.70 × 8 =
  15. 15.31 × 8 =
  16. 16.20 × 8 =
  17. 17.25 × 8 =
  18. 18.76 × 4 =
  19. 19.47 × 8 =
  20. 20.150 × 4 =
  21. 21.71 × 8 =
  22. 22.65 × 8 =
  23. 23.60 × 8 =
  24. 24.114 × 4 =
  25. 25.58 × 4 =
  26. 26.135 × 4 =
  27. 27.26 × 8 =
  28. 28.105 × 4 =
  29. 29.34 × 8 =
  30. 30.126 × 4 =
  31. 31.64 × 4 =
  32. 32.67 × 8 =
  33. 33.23 × 4 =
  34. 34.65 × 4 =
  35. 35.144 × 4 =
  36. 36.34 × 8 =
  37. 37.13 × 4 =
  38. 38.16 × 8 =
  39. 39.23 × 4 =
  40. 40.16 × 4 =

Answer key

  1. 424
  2. 96
  3. 376
  4. 432
  5. 184
  6. 448
  7. 504
  8. 512
  9. 200
  10. 176
  11. 212
  12. 428
  13. 464
  14. 560
  15. 248
  16. 160
  17. 200
  18. 304
  19. 376
  20. 600
  21. 568
  22. 520
  23. 480
  24. 456
  25. 232
  26. 540
  27. 208
  28. 420
  29. 272
  30. 504
  31. 256
  32. 536
  33. 92
  34. 260
  35. 576
  36. 272
  37. 52
  38. 128
  39. 92
  40. 64

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