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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 673 · 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. 1.19 × 4 =
  2. 2.14 × 8 =
  3. 3.130 × 4 =
  4. 4.116 × 4 =
  5. 5.15 × 4 =
  6. 6.52 × 8 =
  7. 7.43 × 8 =
  8. 8.65 × 8 =
  9. 9.17 × 4 =
  10. 10.98 × 4 =
  11. 11.41 × 4 =
  12. 12.18 × 8 =
  13. 13.64 × 4 =
  14. 14.73 × 4 =
  15. 15.41 × 8 =
  16. 16.30 × 8 =
  17. 17.75 × 8 =
  18. 18.64 × 4 =
  19. 19.71 × 8 =
  20. 20.74 × 4 =
  21. 21.116 × 4 =
  22. 22.104 × 4 =
  23. 23.31 × 4 =
  24. 24.45 × 8 =
  25. 25.144 × 4 =
  26. 26.84 × 4 =
  27. 27.107 × 4 =
  28. 28.50 × 8 =
  29. 29.84 × 4 =
  30. 30.90 × 4 =
  31. 31.27 × 8 =
  32. 32.20 × 8 =
  33. 33.42 × 8 =
  34. 34.38 × 4 =
  35. 35.27 × 8 =
  36. 36.144 × 4 =
  37. 37.145 × 4 =
  38. 38.106 × 4 =
  39. 39.61 × 8 =
  40. 40.37 × 8 =

Answer key

  1. 76
  2. 112
  3. 520
  4. 464
  5. 60
  6. 416
  7. 344
  8. 520
  9. 68
  10. 392
  11. 164
  12. 144
  13. 256
  14. 292
  15. 328
  16. 240
  17. 600
  18. 256
  19. 568
  20. 296
  21. 464
  22. 416
  23. 124
  24. 360
  25. 576
  26. 336
  27. 428
  28. 400
  29. 336
  30. 360
  31. 216
  32. 160
  33. 336
  34. 152
  35. 216
  36. 576
  37. 580
  38. 424
  39. 488
  40. 296

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