← Doubling sprints: × 4 and × 8 lesson New set →

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 53 · 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. 1.35 × 4 =
  2. 2.44 × 8 =
  3. 3.102 × 4 =
  4. 4.66 × 8 =
  5. 5.41 × 4 =
  6. 6.128 × 4 =
  7. 7.74 × 8 =
  8. 8.137 × 4 =
  9. 9.73 × 8 =
  10. 10.30 × 8 =
  11. 11.62 × 8 =
  12. 12.45 × 8 =
  13. 13.86 × 4 =
  14. 14.17 × 4 =
  15. 15.155 × 4 =
  16. 16.147 × 4 =
  17. 17.42 × 8 =
  18. 18.15 × 4 =
  19. 19.139 × 4 =
  20. 20.13 × 8 =
  21. 21.25 × 8 =
  22. 22.46 × 8 =
  23. 23.60 × 8 =
  24. 24.34 × 4 =
  25. 25.117 × 4 =
  26. 26.46 × 4 =
  27. 27.18 × 4 =
  28. 28.64 × 4 =
  29. 29.57 × 8 =
  30. 30.32 × 4 =
  31. 31.75 × 8 =
  32. 32.22 × 8 =
  33. 33.68 × 4 =
  34. 34.81 × 4 =
  35. 35.45 × 8 =
  36. 36.21 × 8 =
  37. 37.21 × 4 =
  38. 38.51 × 4 =
  39. 39.108 × 4 =
  40. 40.12 × 8 =

Answer key

  1. 140
  2. 352
  3. 408
  4. 528
  5. 164
  6. 512
  7. 592
  8. 548
  9. 584
  10. 240
  11. 496
  12. 360
  13. 344
  14. 68
  15. 620
  16. 588
  17. 336
  18. 60
  19. 556
  20. 104
  21. 200
  22. 368
  23. 480
  24. 136
  25. 468
  26. 184
  27. 72
  28. 256
  29. 456
  30. 128
  31. 600
  32. 176
  33. 272
  34. 324
  35. 360
  36. 168
  37. 84
  38. 204
  39. 432
  40. 96

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths