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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 186 · 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. 1.48 × 8 =
  2. 2.18 × 8 =
  3. 3.33 × 4 =
  4. 4.24 × 4 =
  5. 5.152 × 4 =
  6. 6.50 × 4 =
  7. 7.66 × 4 =
  8. 8.25 × 8 =
  9. 9.133 × 4 =
  10. 10.121 × 4 =
  11. 11.41 × 8 =
  12. 12.121 × 4 =
  13. 13.57 × 8 =
  14. 14.38 × 8 =
  15. 15.44 × 4 =
  16. 16.56 × 8 =
  17. 17.13 × 8 =
  18. 18.71 × 4 =
  19. 19.129 × 4 =
  20. 20.106 × 4 =
  21. 21.134 × 4 =
  22. 22.22 × 8 =
  23. 23.68 × 8 =
  24. 24.14 × 4 =
  25. 25.71 × 4 =
  26. 26.72 × 4 =
  27. 27.32 × 4 =
  28. 28.18 × 8 =
  29. 29.34 × 8 =
  30. 30.58 × 8 =
  31. 31.116 × 4 =
  32. 32.34 × 8 =
  33. 33.46 × 4 =
  34. 34.75 × 8 =
  35. 35.13 × 8 =
  36. 36.51 × 8 =
  37. 37.129 × 4 =
  38. 38.25 × 8 =
  39. 39.95 × 4 =
  40. 40.44 × 8 =

Answer key

  1. 384
  2. 144
  3. 132
  4. 96
  5. 608
  6. 200
  7. 264
  8. 200
  9. 532
  10. 484
  11. 328
  12. 484
  13. 456
  14. 304
  15. 176
  16. 448
  17. 104
  18. 284
  19. 516
  20. 424
  21. 536
  22. 176
  23. 544
  24. 56
  25. 284
  26. 288
  27. 128
  28. 144
  29. 272
  30. 464
  31. 464
  32. 272
  33. 184
  34. 600
  35. 104
  36. 408
  37. 516
  38. 200
  39. 380
  40. 352

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