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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 630 · 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. 1.39 × 50 =
  2. 2.54 × 50 =
  3. 3.19 × 50 =
  4. 4.92 × 5 =
  5. 5.13 × 5 =
  6. 6.42 × 50 =
  7. 7.17 × 5 =
  8. 8.13 × 5 =
  9. 9.83 × 50 =
  10. 10.63 × 50 =
  11. 11.45 × 5 =
  12. 12.95 × 50 =
  13. 13.34 × 50 =
  14. 14.19 × 5 =
  15. 15.40 × 5 =
  16. 16.90 × 5 =
  17. 17.23 × 50 =
  18. 18.71 × 50 =
  19. 19.74 × 50 =
  20. 20.88 × 5 =
  21. 21.38 × 5 =
  22. 22.72 × 50 =
  23. 23.78 × 5 =
  24. 24.76 × 5 =
  25. 25.28 × 50 =
  26. 26.36 × 50 =
  27. 27.49 × 50 =
  28. 28.38 × 5 =
  29. 29.88 × 5 =
  30. 30.95 × 50 =
  31. 31.16 × 50 =
  32. 32.22 × 50 =
  33. 33.75 × 5 =
  34. 34.44 × 50 =
  35. 35.57 × 50 =
  36. 36.79 × 5 =
  37. 37.78 × 50 =
  38. 38.60 × 5 =
  39. 39.86 × 5 =
  40. 40.85 × 5 =

Answer key

  1. 1950
  2. 2700
  3. 950
  4. 460
  5. 65
  6. 2100
  7. 85
  8. 65
  9. 4150
  10. 3150
  11. 225
  12. 4750
  13. 1700
  14. 95
  15. 200
  16. 450
  17. 1150
  18. 3550
  19. 3700
  20. 440
  21. 190
  22. 3600
  23. 390
  24. 380
  25. 1400
  26. 1800
  27. 2450
  28. 190
  29. 440
  30. 4750
  31. 800
  32. 1100
  33. 375
  34. 2200
  35. 2850
  36. 395
  37. 3900
  38. 300
  39. 430
  40. 425

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