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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 575 · 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. 1.62 × 8 =
  2. 2.144 × 4 =
  3. 3.54 × 8 =
  4. 4.56 × 8 =
  5. 5.75 × 8 =
  6. 6.60 × 8 =
  7. 7.49 × 4 =
  8. 8.61 × 8 =
  9. 9.141 × 4 =
  10. 10.118 × 4 =
  11. 11.89 × 4 =
  12. 12.28 × 4 =
  13. 13.28 × 8 =
  14. 14.121 × 4 =
  15. 15.73 × 8 =
  16. 16.42 × 8 =
  17. 17.42 × 4 =
  18. 18.94 × 4 =
  19. 19.21 × 8 =
  20. 20.60 × 4 =
  21. 21.21 × 8 =
  22. 22.35 × 8 =
  23. 23.16 × 4 =
  24. 24.25 × 8 =
  25. 25.72 × 8 =
  26. 26.57 × 4 =
  27. 27.26 × 8 =
  28. 28.61 × 8 =
  29. 29.48 × 4 =
  30. 30.19 × 8 =
  31. 31.21 × 4 =
  32. 32.54 × 4 =
  33. 33.151 × 4 =
  34. 34.115 × 4 =
  35. 35.68 × 8 =
  36. 36.62 × 4 =
  37. 37.53 × 8 =
  38. 38.19 × 8 =
  39. 39.14 × 8 =
  40. 40.27 × 8 =

Answer key

  1. 496
  2. 576
  3. 432
  4. 448
  5. 600
  6. 480
  7. 196
  8. 488
  9. 564
  10. 472
  11. 356
  12. 112
  13. 224
  14. 484
  15. 584
  16. 336
  17. 168
  18. 376
  19. 168
  20. 240
  21. 168
  22. 280
  23. 64
  24. 200
  25. 576
  26. 228
  27. 208
  28. 488
  29. 192
  30. 152
  31. 84
  32. 216
  33. 604
  34. 460
  35. 544
  36. 248
  37. 424
  38. 152
  39. 112
  40. 216

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