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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 153 · 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. 1.71 × 8 =
  2. 2.61 × 8 =
  3. 3.44 × 8 =
  4. 4.69 × 4 =
  5. 5.54 × 4 =
  6. 6.78 × 4 =
  7. 7.68 × 4 =
  8. 8.95 × 4 =
  9. 9.44 × 8 =
  10. 10.70 × 8 =
  11. 11.41 × 4 =
  12. 12.17 × 8 =
  13. 13.88 × 4 =
  14. 14.60 × 8 =
  15. 15.38 × 8 =
  16. 16.47 × 4 =
  17. 17.17 × 8 =
  18. 18.72 × 8 =
  19. 19.14 × 8 =
  20. 20.46 × 4 =
  21. 21.16 × 8 =
  22. 22.64 × 8 =
  23. 23.42 × 4 =
  24. 24.47 × 8 =
  25. 25.51 × 4 =
  26. 26.34 × 8 =
  27. 27.46 × 4 =
  28. 28.46 × 8 =
  29. 29.74 × 8 =
  30. 30.52 × 8 =
  31. 31.47 × 4 =
  32. 32.90 × 4 =
  33. 33.72 × 8 =
  34. 34.82 × 4 =
  35. 35.54 × 8 =
  36. 36.134 × 4 =
  37. 37.46 × 8 =
  38. 38.40 × 8 =
  39. 39.15 × 8 =
  40. 40.51 × 8 =

Answer key

  1. 568
  2. 488
  3. 352
  4. 276
  5. 216
  6. 312
  7. 272
  8. 380
  9. 352
  10. 560
  11. 164
  12. 136
  13. 352
  14. 480
  15. 304
  16. 188
  17. 136
  18. 576
  19. 112
  20. 184
  21. 128
  22. 512
  23. 168
  24. 376
  25. 204
  26. 272
  27. 184
  28. 368
  29. 592
  30. 416
  31. 188
  32. 360
  33. 576
  34. 328
  35. 432
  36. 536
  37. 368
  38. 320
  39. 120
  40. 408

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