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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 959 · 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. 1.118 × 4 =
  2. 2.33 × 8 =
  3. 3.41 × 8 =
  4. 4.24 × 8 =
  5. 5.131 × 4 =
  6. 6.16 × 8 =
  7. 7.19 × 4 =
  8. 8.139 × 4 =
  9. 9.30 × 8 =
  10. 10.17 × 4 =
  11. 11.50 × 4 =
  12. 12.99 × 4 =
  13. 13.74 × 8 =
  14. 14.29 × 8 =
  15. 15.22 × 8 =
  16. 16.58 × 8 =
  17. 17.22 × 8 =
  18. 18.41 × 8 =
  19. 19.155 × 4 =
  20. 20.28 × 4 =
  21. 21.151 × 4 =
  22. 22.153 × 4 =
  23. 23.126 × 4 =
  24. 24.83 × 4 =
  25. 25.49 × 8 =
  26. 26.20 × 4 =
  27. 27.54 × 4 =
  28. 28.158 × 4 =
  29. 29.158 × 4 =
  30. 30.71 × 4 =
  31. 31.32 × 8 =
  32. 32.19 × 8 =
  33. 33.38 × 8 =
  34. 34.24 × 4 =
  35. 35.81 × 4 =
  36. 36.50 × 8 =
  37. 37.81 × 4 =
  38. 38.21 × 4 =
  39. 39.117 × 4 =
  40. 40.71 × 8 =

Answer key

  1. 472
  2. 264
  3. 328
  4. 192
  5. 524
  6. 128
  7. 76
  8. 556
  9. 240
  10. 68
  11. 200
  12. 396
  13. 592
  14. 232
  15. 176
  16. 464
  17. 176
  18. 328
  19. 620
  20. 112
  21. 604
  22. 612
  23. 504
  24. 332
  25. 392
  26. 80
  27. 216
  28. 632
  29. 632
  30. 284
  31. 256
  32. 152
  33. 304
  34. 96
  35. 324
  36. 400
  37. 324
  38. 84
  39. 468
  40. 568

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