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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 295 · 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. 1.23 × 8 =
  2. 2.119 × 4 =
  3. 3.32 × 8 =
  4. 4.32 × 4 =
  5. 5.55 × 8 =
  6. 6.69 × 4 =
  7. 7.39 × 4 =
  8. 8.131 × 4 =
  9. 9.75 × 8 =
  10. 10.63 × 8 =
  11. 11.55 × 4 =
  12. 12.59 × 8 =
  13. 13.88 × 4 =
  14. 14.16 × 8 =
  15. 15.14 × 8 =
  16. 16.42 × 8 =
  17. 17.121 × 4 =
  18. 18.40 × 4 =
  19. 19.87 × 4 =
  20. 20.63 × 8 =
  21. 21.108 × 4 =
  22. 22.31 × 4 =
  23. 23.29 × 8 =
  24. 24.100 × 4 =
  25. 25.81 × 4 =
  26. 26.130 × 4 =
  27. 27.23 × 8 =
  28. 28.64 × 8 =
  29. 29.48 × 8 =
  30. 30.63 × 8 =
  31. 31.43 × 8 =
  32. 32.50 × 8 =
  33. 33.53 × 8 =
  34. 34.72 × 8 =
  35. 35.25 × 8 =
  36. 36.73 × 4 =
  37. 37.24 × 8 =
  38. 38.34 × 4 =
  39. 39.117 × 4 =
  40. 40.58 × 4 =

Answer key

  1. 184
  2. 476
  3. 256
  4. 128
  5. 440
  6. 276
  7. 156
  8. 524
  9. 600
  10. 504
  11. 220
  12. 472
  13. 352
  14. 128
  15. 112
  16. 336
  17. 484
  18. 160
  19. 348
  20. 504
  21. 432
  22. 124
  23. 232
  24. 400
  25. 324
  26. 520
  27. 184
  28. 512
  29. 384
  30. 504
  31. 344
  32. 400
  33. 424
  34. 576
  35. 200
  36. 292
  37. 192
  38. 136
  39. 468
  40. 232

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