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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 444 · 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. 1.60 × 8 =
  2. 2.61 × 8 =
  3. 3.141 × 4 =
  4. 4.20 × 4 =
  5. 5.55 × 8 =
  6. 6.23 × 8 =
  7. 7.61 × 8 =
  8. 8.51 × 8 =
  9. 9.60 × 8 =
  10. 10.68 × 4 =
  11. 11.16 × 4 =
  12. 12.54 × 8 =
  13. 13.71 × 8 =
  14. 14.54 × 8 =
  15. 15.23 × 8 =
  16. 16.28 × 8 =
  17. 17.20 × 4 =
  18. 18.74 × 8 =
  19. 19.71 × 8 =
  20. 20.27 × 4 =
  21. 21.42 × 8 =
  22. 22.51 × 8 =
  23. 23.34 × 8 =
  24. 24.132 × 4 =
  25. 25.154 × 4 =
  26. 26.36 × 4 =
  27. 27.29 × 8 =
  28. 28.68 × 4 =
  29. 29.60 × 8 =
  30. 30.43 × 8 =
  31. 31.60 × 4 =
  32. 32.136 × 4 =
  33. 33.21 × 4 =
  34. 34.55 × 8 =
  35. 35.125 × 4 =
  36. 36.26 × 8 =
  37. 37.54 × 8 =
  38. 38.50 × 8 =
  39. 39.12 × 8 =
  40. 40.47 × 8 =

Answer key

  1. 480
  2. 488
  3. 564
  4. 80
  5. 440
  6. 184
  7. 488
  8. 408
  9. 480
  10. 272
  11. 64
  12. 432
  13. 568
  14. 432
  15. 184
  16. 224
  17. 80
  18. 592
  19. 568
  20. 108
  21. 336
  22. 408
  23. 272
  24. 528
  25. 616
  26. 144
  27. 232
  28. 272
  29. 480
  30. 344
  31. 240
  32. 544
  33. 84
  34. 440
  35. 500
  36. 208
  37. 432
  38. 400
  39. 96
  40. 376

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