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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 296 · 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. 1.126 × 4 =
  2. 2.100 × 4 =
  3. 3.110 × 4 =
  4. 4.55 × 8 =
  5. 5.18 × 4 =
  6. 6.138 × 4 =
  7. 7.38 × 4 =
  8. 8.54 × 4 =
  9. 9.157 × 4 =
  10. 10.26 × 8 =
  11. 11.66 × 8 =
  12. 12.118 × 4 =
  13. 13.56 × 8 =
  14. 14.40 × 8 =
  15. 15.150 × 4 =
  16. 16.45 × 8 =
  17. 17.42 × 8 =
  18. 18.63 × 8 =
  19. 19.76 × 4 =
  20. 20.14 × 4 =
  21. 21.35 × 8 =
  22. 22.39 × 8 =
  23. 23.20 × 8 =
  24. 24.30 × 8 =
  25. 25.103 × 4 =
  26. 26.77 × 4 =
  27. 27.41 × 8 =
  28. 28.16 × 8 =
  29. 29.57 × 8 =
  30. 30.52 × 4 =
  31. 31.13 × 8 =
  32. 32.55 × 8 =
  33. 33.55 × 8 =
  34. 34.138 × 4 =
  35. 35.13 × 8 =
  36. 36.130 × 4 =
  37. 37.159 × 4 =
  38. 38.22 × 4 =
  39. 39.50 × 8 =
  40. 40.41 × 4 =

Answer key

  1. 504
  2. 400
  3. 440
  4. 440
  5. 72
  6. 552
  7. 152
  8. 216
  9. 628
  10. 208
  11. 528
  12. 472
  13. 448
  14. 320
  15. 600
  16. 360
  17. 336
  18. 504
  19. 304
  20. 56
  21. 280
  22. 312
  23. 160
  24. 240
  25. 412
  26. 308
  27. 328
  28. 128
  29. 456
  30. 208
  31. 104
  32. 440
  33. 440
  34. 552
  35. 104
  36. 520
  37. 636
  38. 88
  39. 400
  40. 164

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