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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 380 · 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. 1.54 × 8 =
  2. 2.16 × 4 =
  3. 3.38 × 8 =
  4. 4.29 × 4 =
  5. 5.122 × 4 =
  6. 6.49 × 8 =
  7. 7.78 × 4 =
  8. 8.37 × 8 =
  9. 9.150 × 4 =
  10. 10.109 × 4 =
  11. 11.12 × 8 =
  12. 12.16 × 8 =
  13. 13.44 × 4 =
  14. 14.27 × 8 =
  15. 15.94 × 4 =
  16. 16.28 × 4 =
  17. 17.107 × 4 =
  18. 18.20 × 8 =
  19. 19.46 × 8 =
  20. 20.74 × 4 =
  21. 21.58 × 4 =
  22. 22.80 × 4 =
  23. 23.72 × 8 =
  24. 24.30 × 8 =
  25. 25.49 × 4 =
  26. 26.26 × 8 =
  27. 27.95 × 4 =
  28. 28.101 × 4 =
  29. 29.20 × 8 =
  30. 30.127 × 4 =
  31. 31.75 × 8 =
  32. 32.65 × 8 =
  33. 33.36 × 8 =
  34. 34.100 × 4 =
  35. 35.87 × 4 =
  36. 36.59 × 8 =
  37. 37.55 × 8 =
  38. 38.67 × 8 =
  39. 39.24 × 8 =
  40. 40.76 × 4 =

Answer key

  1. 432
  2. 64
  3. 304
  4. 116
  5. 488
  6. 392
  7. 312
  8. 296
  9. 600
  10. 436
  11. 96
  12. 128
  13. 176
  14. 216
  15. 376
  16. 112
  17. 428
  18. 160
  19. 368
  20. 296
  21. 232
  22. 320
  23. 576
  24. 240
  25. 196
  26. 208
  27. 380
  28. 404
  29. 160
  30. 508
  31. 600
  32. 520
  33. 288
  34. 400
  35. 348
  36. 472
  37. 440
  38. 536
  39. 192
  40. 304

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