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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 634 · 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. 1.62 × 50 =
  2. 2.32 × 50 =
  3. 3.31 × 50 =
  4. 4.60 × 5 =
  5. 5.50 × 50 =
  6. 6.35 × 5 =
  7. 7.47 × 50 =
  8. 8.80 × 50 =
  9. 9.37 × 5 =
  10. 10.82 × 50 =
  11. 11.46 × 50 =
  12. 12.89 × 5 =
  13. 13.78 × 5 =
  14. 14.83 × 50 =
  15. 15.53 × 50 =
  16. 16.12 × 50 =
  17. 17.21 × 50 =
  18. 18.77 × 5 =
  19. 19.73 × 5 =
  20. 20.21 × 5 =
  21. 21.71 × 50 =
  22. 22.54 × 50 =
  23. 23.61 × 5 =
  24. 24.43 × 5 =
  25. 25.25 × 50 =
  26. 26.72 × 5 =
  27. 27.91 × 50 =
  28. 28.39 × 50 =
  29. 29.76 × 5 =
  30. 30.61 × 5 =
  31. 31.34 × 50 =
  32. 32.18 × 5 =
  33. 33.19 × 50 =
  34. 34.63 × 50 =
  35. 35.18 × 50 =
  36. 36.66 × 5 =
  37. 37.70 × 5 =
  38. 38.36 × 5 =
  39. 39.36 × 50 =
  40. 40.84 × 50 =

Answer key

  1. 3100
  2. 1600
  3. 1550
  4. 300
  5. 2500
  6. 175
  7. 2350
  8. 4000
  9. 185
  10. 4100
  11. 2300
  12. 445
  13. 390
  14. 4150
  15. 2650
  16. 600
  17. 1050
  18. 385
  19. 365
  20. 105
  21. 3550
  22. 2700
  23. 305
  24. 215
  25. 1250
  26. 360
  27. 4550
  28. 1950
  29. 380
  30. 305
  31. 1700
  32. 90
  33. 950
  34. 3150
  35. 900
  36. 330
  37. 350
  38. 180
  39. 1800
  40. 4200

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