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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 944 · 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. 1.25 × 5 =
  2. 2.14 × 50 =
  3. 3.79 × 50 =
  4. 4.19 × 50 =
  5. 5.43 × 5 =
  6. 6.48 × 5 =
  7. 7.22 × 5 =
  8. 8.48 × 50 =
  9. 9.92 × 5 =
  10. 10.70 × 5 =
  11. 11.75 × 50 =
  12. 12.66 × 50 =
  13. 13.40 × 5 =
  14. 14.22 × 50 =
  15. 15.23 × 50 =
  16. 16.40 × 5 =
  17. 17.54 × 50 =
  18. 18.59 × 5 =
  19. 19.60 × 50 =
  20. 20.59 × 50 =
  21. 21.53 × 50 =
  22. 22.56 × 50 =
  23. 23.79 × 5 =
  24. 24.49 × 5 =
  25. 25.17 × 50 =
  26. 26.13 × 50 =
  27. 27.23 × 50 =
  28. 28.77 × 50 =
  29. 29.19 × 50 =
  30. 30.98 × 5 =
  31. 31.94 × 5 =
  32. 32.35 × 50 =
  33. 33.31 × 50 =
  34. 34.91 × 50 =
  35. 35.33 × 50 =
  36. 36.73 × 50 =
  37. 37.21 × 5 =
  38. 38.30 × 5 =
  39. 39.81 × 50 =
  40. 40.81 × 50 =

Answer key

  1. 125
  2. 700
  3. 3950
  4. 950
  5. 215
  6. 240
  7. 110
  8. 2400
  9. 460
  10. 350
  11. 3750
  12. 3300
  13. 200
  14. 1100
  15. 1150
  16. 200
  17. 2700
  18. 295
  19. 3000
  20. 2950
  21. 2650
  22. 2800
  23. 395
  24. 245
  25. 850
  26. 650
  27. 1150
  28. 3850
  29. 950
  30. 490
  31. 470
  32. 1750
  33. 1550
  34. 4550
  35. 1650
  36. 3650
  37. 105
  38. 150
  39. 4050
  40. 4050

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