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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 96 · 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. 1.30 × 8 =
  2. 2.48 × 4 =
  3. 3.39 × 8 =
  4. 4.132 × 4 =
  5. 5.18 × 8 =
  6. 6.41 × 8 =
  7. 7.46 × 8 =
  8. 8.72 × 4 =
  9. 9.120 × 4 =
  10. 10.61 × 8 =
  11. 11.15 × 8 =
  12. 12.80 × 4 =
  13. 13.23 × 4 =
  14. 14.13 × 8 =
  15. 15.46 × 8 =
  16. 16.51 × 8 =
  17. 17.39 × 8 =
  18. 18.89 × 4 =
  19. 19.42 × 8 =
  20. 20.66 × 4 =
  21. 21.65 × 4 =
  22. 22.51 × 8 =
  23. 23.25 × 8 =
  24. 24.54 × 8 =
  25. 25.64 × 4 =
  26. 26.128 × 4 =
  27. 27.54 × 4 =
  28. 28.22 × 8 =
  29. 29.133 × 4 =
  30. 30.59 × 8 =
  31. 31.128 × 4 =
  32. 32.79 × 4 =
  33. 33.158 × 4 =
  34. 34.18 × 4 =
  35. 35.14 × 8 =
  36. 36.74 × 8 =
  37. 37.13 × 8 =
  38. 38.22 × 8 =
  39. 39.19 × 4 =
  40. 40.73 × 8 =

Answer key

  1. 240
  2. 192
  3. 312
  4. 528
  5. 144
  6. 328
  7. 368
  8. 288
  9. 480
  10. 488
  11. 120
  12. 320
  13. 92
  14. 104
  15. 368
  16. 408
  17. 312
  18. 356
  19. 336
  20. 264
  21. 260
  22. 408
  23. 200
  24. 432
  25. 256
  26. 512
  27. 216
  28. 176
  29. 532
  30. 472
  31. 512
  32. 316
  33. 632
  34. 72
  35. 112
  36. 592
  37. 104
  38. 176
  39. 76
  40. 584

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