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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 592 · 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. 1.87 × 5 =
  2. 2.40 × 50 =
  3. 3.40 × 5 =
  4. 4.25 × 50 =
  5. 5.78 × 5 =
  6. 6.64 × 50 =
  7. 7.51 × 50 =
  8. 8.23 × 50 =
  9. 9.33 × 50 =
  10. 10.82 × 50 =
  11. 11.66 × 50 =
  12. 12.65 × 5 =
  13. 13.49 × 50 =
  14. 14.83 × 5 =
  15. 15.28 × 5 =
  16. 16.38 × 50 =
  17. 17.66 × 50 =
  18. 18.34 × 5 =
  19. 19.98 × 50 =
  20. 20.76 × 50 =
  21. 21.38 × 5 =
  22. 22.82 × 5 =
  23. 23.90 × 50 =
  24. 24.73 × 5 =
  25. 25.94 × 5 =
  26. 26.57 × 50 =
  27. 27.24 × 5 =
  28. 28.58 × 5 =
  29. 29.18 × 5 =
  30. 30.87 × 5 =
  31. 31.70 × 50 =
  32. 32.91 × 50 =
  33. 33.82 × 5 =
  34. 34.64 × 5 =
  35. 35.25 × 5 =
  36. 36.54 × 50 =
  37. 37.88 × 50 =
  38. 38.72 × 5 =
  39. 39.16 × 50 =
  40. 40.87 × 50 =

Answer key

  1. 435
  2. 2000
  3. 200
  4. 1250
  5. 390
  6. 3200
  7. 2550
  8. 1150
  9. 1650
  10. 4100
  11. 3300
  12. 325
  13. 2450
  14. 415
  15. 140
  16. 1900
  17. 3300
  18. 170
  19. 4900
  20. 3800
  21. 190
  22. 410
  23. 4500
  24. 365
  25. 470
  26. 2850
  27. 120
  28. 290
  29. 90
  30. 435
  31. 3500
  32. 4550
  33. 410
  34. 320
  35. 125
  36. 2700
  37. 4400
  38. 360
  39. 800
  40. 4350

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