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

Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 923 · 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. 1.106 × 4 =
  2. 2.26 × 8 =
  3. 3.41 × 4 =
  4. 4.24 × 4 =
  5. 5.55 × 8 =
  6. 6.18 × 8 =
  7. 7.99 × 4 =
  8. 8.31 × 8 =
  9. 9.69 × 8 =
  10. 10.66 × 8 =
  11. 11.110 × 4 =
  12. 12.102 × 4 =
  13. 13.52 × 8 =
  14. 14.28 × 4 =
  15. 15.58 × 8 =
  16. 16.142 × 4 =
  17. 17.57 × 4 =
  18. 18.100 × 4 =
  19. 19.34 × 8 =
  20. 20.28 × 8 =
  21. 21.16 × 8 =
  22. 22.68 × 8 =
  23. 23.37 × 8 =
  24. 24.16 × 8 =
  25. 25.13 × 4 =
  26. 26.46 × 8 =
  27. 27.46 × 4 =
  28. 28.59 × 4 =
  29. 29.50 × 4 =
  30. 30.25 × 8 =
  31. 31.68 × 8 =
  32. 32.44 × 8 =
  33. 33.36 × 8 =
  34. 34.72 × 4 =
  35. 35.118 × 4 =
  36. 36.37 × 4 =
  37. 37.63 × 8 =
  38. 38.52 × 8 =
  39. 39.50 × 8 =
  40. 40.32 × 4 =

Answer key

  1. 424
  2. 208
  3. 164
  4. 96
  5. 440
  6. 144
  7. 396
  8. 248
  9. 552
  10. 528
  11. 440
  12. 408
  13. 416
  14. 112
  15. 464
  16. 568
  17. 228
  18. 400
  19. 272
  20. 224
  21. 128
  22. 544
  23. 296
  24. 128
  25. 52
  26. 368
  27. 184
  28. 236
  29. 200
  30. 200
  31. 544
  32. 352
  33. 288
  34. 288
  35. 472
  36. 148
  37. 504
  38. 416
  39. 400
  40. 128

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