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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 584 · 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. 1.26 × 8 =
  2. 2.13 × 4 =
  3. 3.38 × 4 =
  4. 4.46 × 8 =
  5. 5.48 × 4 =
  6. 6.49 × 8 =
  7. 7.132 × 4 =
  8. 8.29 × 8 =
  9. 9.141 × 4 =
  10. 10.139 × 4 =
  11. 11.28 × 4 =
  12. 12.72 × 8 =
  13. 13.66 × 4 =
  14. 14.61 × 8 =
  15. 15.19 × 8 =
  16. 16.107 × 4 =
  17. 17.132 × 4 =
  18. 18.74 × 8 =
  19. 19.68 × 8 =
  20. 20.42 × 4 =
  21. 21.16 × 4 =
  22. 22.12 × 8 =
  23. 23.54 × 4 =
  24. 24.137 × 4 =
  25. 25.66 × 4 =
  26. 26.53 × 8 =
  27. 27.55 × 8 =
  28. 28.62 × 4 =
  29. 29.41 × 4 =
  30. 30.151 × 4 =
  31. 31.141 × 4 =
  32. 32.66 × 8 =
  33. 33.39 × 8 =
  34. 34.102 × 4 =
  35. 35.58 × 8 =
  36. 36.35 × 8 =
  37. 37.157 × 4 =
  38. 38.110 × 4 =
  39. 39.50 × 8 =
  40. 40.73 × 4 =

Answer key

  1. 208
  2. 52
  3. 152
  4. 368
  5. 192
  6. 392
  7. 528
  8. 232
  9. 564
  10. 556
  11. 112
  12. 576
  13. 264
  14. 488
  15. 152
  16. 428
  17. 528
  18. 592
  19. 544
  20. 168
  21. 64
  22. 96
  23. 216
  24. 548
  25. 264
  26. 424
  27. 440
  28. 248
  29. 164
  30. 604
  31. 564
  32. 528
  33. 312
  34. 408
  35. 464
  36. 280
  37. 628
  38. 440
  39. 400
  40. 292

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