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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 460 · 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. 1.60 × 50 =
  2. 2.32 × 50 =
  3. 3.61 × 5 =
  4. 4.25 × 5 =
  5. 5.28 × 50 =
  6. 6.58 × 5 =
  7. 7.81 × 5 =
  8. 8.83 × 5 =
  9. 9.76 × 5 =
  10. 10.89 × 50 =
  11. 11.95 × 5 =
  12. 12.40 × 50 =
  13. 13.74 × 50 =
  14. 14.39 × 5 =
  15. 15.61 × 5 =
  16. 16.49 × 50 =
  17. 17.36 × 5 =
  18. 18.17 × 5 =
  19. 19.49 × 50 =
  20. 20.89 × 50 =
  21. 21.57 × 50 =
  22. 22.14 × 5 =
  23. 23.72 × 5 =
  24. 24.37 × 50 =
  25. 25.28 × 50 =
  26. 26.20 × 50 =
  27. 27.22 × 50 =
  28. 28.86 × 50 =
  29. 29.53 × 5 =
  30. 30.50 × 5 =
  31. 31.60 × 5 =
  32. 32.65 × 50 =
  33. 33.21 × 5 =
  34. 34.95 × 5 =
  35. 35.14 × 5 =
  36. 36.88 × 5 =
  37. 37.19 × 50 =
  38. 38.94 × 5 =
  39. 39.37 × 5 =
  40. 40.73 × 5 =

Answer key

  1. 3000
  2. 1600
  3. 305
  4. 125
  5. 1400
  6. 290
  7. 405
  8. 415
  9. 380
  10. 4450
  11. 475
  12. 2000
  13. 3700
  14. 195
  15. 305
  16. 2450
  17. 180
  18. 85
  19. 2450
  20. 4450
  21. 2850
  22. 70
  23. 360
  24. 1850
  25. 1400
  26. 1000
  27. 1100
  28. 4300
  29. 265
  30. 250
  31. 300
  32. 3250
  33. 105
  34. 475
  35. 70
  36. 440
  37. 950
  38. 470
  39. 185
  40. 365

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