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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 773 · 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. 1.43 × 4 =
  2. 2.48 × 4 =
  3. 3.47 × 8 =
  4. 4.140 × 4 =
  5. 5.70 × 4 =
  6. 6.61 × 4 =
  7. 7.64 × 8 =
  8. 8.60 × 4 =
  9. 9.70 × 4 =
  10. 10.51 × 4 =
  11. 11.107 × 4 =
  12. 12.62 × 4 =
  13. 13.48 × 8 =
  14. 14.30 × 4 =
  15. 15.35 × 8 =
  16. 16.29 × 8 =
  17. 17.18 × 4 =
  18. 18.24 × 8 =
  19. 19.78 × 4 =
  20. 20.62 × 4 =
  21. 21.19 × 4 =
  22. 22.14 × 8 =
  23. 23.38 × 8 =
  24. 24.114 × 4 =
  25. 25.61 × 8 =
  26. 26.141 × 4 =
  27. 27.108 × 4 =
  28. 28.35 × 8 =
  29. 29.66 × 8 =
  30. 30.148 × 4 =
  31. 31.69 × 8 =
  32. 32.29 × 8 =
  33. 33.33 × 8 =
  34. 34.68 × 4 =
  35. 35.75 × 8 =
  36. 36.117 × 4 =
  37. 37.37 × 8 =
  38. 38.51 × 4 =
  39. 39.31 × 4 =
  40. 40.39 × 4 =

Answer key

  1. 172
  2. 192
  3. 376
  4. 560
  5. 280
  6. 244
  7. 512
  8. 240
  9. 280
  10. 204
  11. 428
  12. 248
  13. 384
  14. 120
  15. 280
  16. 232
  17. 72
  18. 192
  19. 312
  20. 248
  21. 76
  22. 112
  23. 304
  24. 456
  25. 488
  26. 564
  27. 432
  28. 280
  29. 528
  30. 592
  31. 552
  32. 232
  33. 264
  34. 272
  35. 600
  36. 468
  37. 296
  38. 204
  39. 124
  40. 156

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