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Multiply by 4 and 8 Worksheet

Speed calculation lesson 6: Doubling sprints: × 4 and × 8 · Set 190 · 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. 1.59 × 8 =
  2. 2.150 × 4 =
  3. 3.20 × 4 =
  4. 4.62 × 8 =
  5. 5.70 × 8 =
  6. 6.57 × 8 =
  7. 7.28 × 4 =
  8. 8.72 × 8 =
  9. 9.145 × 4 =
  10. 10.75 × 4 =
  11. 11.17 × 8 =
  12. 12.148 × 4 =
  13. 13.72 × 8 =
  14. 14.43 × 8 =
  15. 15.109 × 4 =
  16. 16.52 × 8 =
  17. 17.55 × 8 =
  18. 18.52 × 8 =
  19. 19.26 × 8 =
  20. 20.47 × 8 =
  21. 21.102 × 4 =
  22. 22.69 × 8 =
  23. 23.114 × 4 =
  24. 24.34 × 8 =
  25. 25.60 × 8 =
  26. 26.23 × 8 =
  27. 27.76 × 4 =
  28. 28.32 × 8 =
  29. 29.122 × 4 =
  30. 30.71 × 4 =
  31. 31.69 × 8 =
  32. 32.104 × 4 =
  33. 33.24 × 8 =
  34. 34.93 × 4 =
  35. 35.65 × 4 =
  36. 36.73 × 4 =
  37. 37.113 × 4 =
  38. 38.73 × 8 =
  39. 39.61 × 4 =
  40. 40.16 × 8 =

Answer key

  1. 472
  2. 600
  3. 80
  4. 496
  5. 560
  6. 456
  7. 112
  8. 576
  9. 580
  10. 300
  11. 136
  12. 592
  13. 576
  14. 344
  15. 436
  16. 416
  17. 440
  18. 416
  19. 208
  20. 376
  21. 408
  22. 552
  23. 456
  24. 272
  25. 480
  26. 184
  27. 304
  28. 256
  29. 488
  30. 284
  31. 552
  32. 416
  33. 192
  34. 372
  35. 260
  36. 292
  37. 452
  38. 584
  39. 244
  40. 128

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