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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 924 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.94 × 5 =
  2. 2.86 × 50 =
  3. 3.39 × 5 =
  4. 4.28 × 5 =
  5. 5.87 × 5 =
  6. 6.66 × 50 =
  7. 7.91 × 5 =
  8. 8.18 × 50 =
  9. 9.53 × 50 =
  10. 10.59 × 50 =
  11. 11.38 × 50 =
  12. 12.24 × 5 =
  13. 13.77 × 5 =
  14. 14.33 × 50 =
  15. 15.84 × 50 =
  16. 16.77 × 50 =
  17. 17.35 × 50 =
  18. 18.60 × 50 =
  19. 19.33 × 50 =
  20. 20.78 × 50 =
  21. 21.85 × 5 =
  22. 22.92 × 5 =
  23. 23.29 × 5 =
  24. 24.46 × 50 =
  25. 25.67 × 5 =
  26. 26.12 × 5 =
  27. 27.13 × 5 =
  28. 28.59 × 5 =
  29. 29.39 × 5 =
  30. 30.82 × 5 =
  31. 31.23 × 50 =
  32. 32.52 × 5 =
  33. 33.35 × 5 =
  34. 34.61 × 50 =
  35. 35.19 × 50 =
  36. 36.62 × 50 =
  37. 37.32 × 5 =
  38. 38.36 × 50 =
  39. 39.13 × 5 =
  40. 40.58 × 5 =

Answer key

  1. 470
  2. 4300
  3. 195
  4. 140
  5. 435
  6. 3300
  7. 455
  8. 900
  9. 2650
  10. 2950
  11. 1900
  12. 120
  13. 385
  14. 1650
  15. 4200
  16. 3850
  17. 1750
  18. 3000
  19. 1650
  20. 3900
  21. 425
  22. 460
  23. 145
  24. 2300
  25. 335
  26. 60
  27. 65
  28. 295
  29. 195
  30. 410
  31. 1150
  32. 260
  33. 175
  34. 3050
  35. 950
  36. 3100
  37. 160
  38. 1800
  39. 65
  40. 290

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