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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 876 · 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. 1.58 × 8 =
  2. 2.54 × 8 =
  3. 3.26 × 8 =
  4. 4.20 × 8 =
  5. 5.31 × 8 =
  6. 6.14 × 8 =
  7. 7.70 × 8 =
  8. 8.43 × 8 =
  9. 9.26 × 8 =
  10. 10.40 × 4 =
  11. 11.90 × 4 =
  12. 12.52 × 8 =
  13. 13.22 × 8 =
  14. 14.157 × 4 =
  15. 15.137 × 4 =
  16. 16.59 × 8 =
  17. 17.18 × 4 =
  18. 18.156 × 4 =
  19. 19.44 × 8 =
  20. 20.18 × 8 =
  21. 21.44 × 4 =
  22. 22.151 × 4 =
  23. 23.29 × 8 =
  24. 24.54 × 4 =
  25. 25.34 × 8 =
  26. 26.128 × 4 =
  27. 27.62 × 8 =
  28. 28.54 × 8 =
  29. 29.59 × 8 =
  30. 30.19 × 8 =
  31. 31.29 × 4 =
  32. 32.148 × 4 =
  33. 33.27 × 4 =
  34. 34.133 × 4 =
  35. 35.70 × 4 =
  36. 36.90 × 4 =
  37. 37.118 × 4 =
  38. 38.37 × 8 =
  39. 39.124 × 4 =
  40. 40.29 × 8 =

Answer key

  1. 464
  2. 432
  3. 208
  4. 160
  5. 248
  6. 112
  7. 560
  8. 344
  9. 208
  10. 160
  11. 360
  12. 416
  13. 176
  14. 628
  15. 548
  16. 472
  17. 72
  18. 624
  19. 352
  20. 144
  21. 176
  22. 604
  23. 232
  24. 216
  25. 272
  26. 512
  27. 496
  28. 432
  29. 472
  30. 152
  31. 116
  32. 592
  33. 108
  34. 532
  35. 280
  36. 360
  37. 472
  38. 296
  39. 496
  40. 232

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