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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 994 · 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. 1.130 × 4 =
  2. 2.30 × 8 =
  3. 3.120 × 4 =
  4. 4.23 × 8 =
  5. 5.60 × 8 =
  6. 6.32 × 8 =
  7. 7.26 × 8 =
  8. 8.46 × 8 =
  9. 9.54 × 8 =
  10. 10.72 × 8 =
  11. 11.35 × 4 =
  12. 12.17 × 8 =
  13. 13.47 × 8 =
  14. 14.60 × 8 =
  15. 15.40 × 8 =
  16. 16.52 × 8 =
  17. 17.53 × 8 =
  18. 18.32 × 4 =
  19. 19.145 × 4 =
  20. 20.92 × 4 =
  21. 21.107 × 4 =
  22. 22.20 × 8 =
  23. 23.74 × 8 =
  24. 24.117 × 4 =
  25. 25.110 × 4 =
  26. 26.47 × 8 =
  27. 27.54 × 8 =
  28. 28.16 × 4 =
  29. 29.46 × 8 =
  30. 30.57 × 8 =
  31. 31.31 × 8 =
  32. 32.50 × 8 =
  33. 33.41 × 8 =
  34. 34.135 × 4 =
  35. 35.24 × 8 =
  36. 36.15 × 8 =
  37. 37.63 × 4 =
  38. 38.68 × 8 =
  39. 39.108 × 4 =
  40. 40.150 × 4 =

Answer key

  1. 520
  2. 240
  3. 480
  4. 184
  5. 480
  6. 256
  7. 208
  8. 368
  9. 432
  10. 576
  11. 140
  12. 136
  13. 376
  14. 480
  15. 320
  16. 416
  17. 424
  18. 128
  19. 580
  20. 368
  21. 428
  22. 160
  23. 592
  24. 468
  25. 440
  26. 376
  27. 432
  28. 64
  29. 368
  30. 456
  31. 248
  32. 400
  33. 328
  34. 540
  35. 192
  36. 120
  37. 252
  38. 544
  39. 432
  40. 600

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