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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 354 · 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. 1.126 × 4 =
  2. 2.41 × 8 =
  3. 3.20 × 8 =
  4. 4.22 × 8 =
  5. 5.49 × 8 =
  6. 6.52 × 8 =
  7. 7.18 × 8 =
  8. 8.54 × 4 =
  9. 9.87 × 4 =
  10. 10.66 × 8 =
  11. 11.14 × 8 =
  12. 12.89 × 4 =
  13. 13.111 × 4 =
  14. 14.15 × 8 =
  15. 15.16 × 8 =
  16. 16.15 × 8 =
  17. 17.19 × 4 =
  18. 18.20 × 4 =
  19. 19.70 × 8 =
  20. 20.30 × 8 =
  21. 21.25 × 4 =
  22. 22.56 × 8 =
  23. 23.75 × 8 =
  24. 24.41 × 4 =
  25. 25.27 × 8 =
  26. 26.14 × 8 =
  27. 27.27 × 4 =
  28. 28.58 × 8 =
  29. 29.18 × 4 =
  30. 30.19 × 8 =
  31. 31.52 × 4 =
  32. 32.12 × 8 =
  33. 33.143 × 4 =
  34. 34.29 × 8 =
  35. 35.156 × 4 =
  36. 36.19 × 4 =
  37. 37.15 × 4 =
  38. 38.47 × 8 =
  39. 39.87 × 4 =
  40. 40.29 × 8 =

Answer key

  1. 504
  2. 328
  3. 160
  4. 176
  5. 392
  6. 416
  7. 144
  8. 216
  9. 348
  10. 528
  11. 112
  12. 356
  13. 444
  14. 120
  15. 128
  16. 120
  17. 76
  18. 80
  19. 560
  20. 240
  21. 100
  22. 448
  23. 600
  24. 164
  25. 216
  26. 112
  27. 108
  28. 464
  29. 72
  30. 152
  31. 208
  32. 96
  33. 572
  34. 232
  35. 624
  36. 76
  37. 60
  38. 376
  39. 348
  40. 232

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