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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 362 · 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. 1.113 × 4 =
  2. 2.66 × 4 =
  3. 3.45 × 8 =
  4. 4.99 × 4 =
  5. 5.52 × 4 =
  6. 6.40 × 4 =
  7. 7.13 × 8 =
  8. 8.32 × 8 =
  9. 9.14 × 8 =
  10. 10.36 × 8 =
  11. 11.82 × 4 =
  12. 12.118 × 4 =
  13. 13.17 × 4 =
  14. 14.42 × 8 =
  15. 15.51 × 8 =
  16. 16.157 × 4 =
  17. 17.34 × 8 =
  18. 18.48 × 8 =
  19. 19.117 × 4 =
  20. 20.48 × 4 =
  21. 21.120 × 4 =
  22. 22.60 × 4 =
  23. 23.22 × 8 =
  24. 24.39 × 8 =
  25. 25.52 × 4 =
  26. 26.12 × 8 =
  27. 27.23 × 4 =
  28. 28.62 × 8 =
  29. 29.14 × 8 =
  30. 30.74 × 8 =
  31. 31.97 × 4 =
  32. 32.133 × 4 =
  33. 33.32 × 8 =
  34. 34.28 × 8 =
  35. 35.73 × 4 =
  36. 36.58 × 8 =
  37. 37.22 × 4 =
  38. 38.40 × 8 =
  39. 39.44 × 4 =
  40. 40.24 × 8 =

Answer key

  1. 452
  2. 264
  3. 360
  4. 396
  5. 208
  6. 160
  7. 104
  8. 256
  9. 112
  10. 288
  11. 328
  12. 472
  13. 68
  14. 336
  15. 408
  16. 628
  17. 272
  18. 384
  19. 468
  20. 192
  21. 480
  22. 240
  23. 176
  24. 312
  25. 208
  26. 96
  27. 92
  28. 496
  29. 112
  30. 592
  31. 388
  32. 532
  33. 256
  34. 224
  35. 292
  36. 464
  37. 88
  38. 320
  39. 176
  40. 192

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