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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 635 · 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. 1.34 × 5 =
  2. 2.69 × 50 =
  3. 3.26 × 5 =
  4. 4.61 × 50 =
  5. 5.85 × 5 =
  6. 6.23 × 5 =
  7. 7.57 × 50 =
  8. 8.88 × 5 =
  9. 9.96 × 50 =
  10. 10.24 × 50 =
  11. 11.39 × 50 =
  12. 12.40 × 50 =
  13. 13.50 × 5 =
  14. 14.50 × 5 =
  15. 15.30 × 50 =
  16. 16.22 × 50 =
  17. 17.50 × 5 =
  18. 18.71 × 50 =
  19. 19.34 × 50 =
  20. 20.45 × 5 =
  21. 21.30 × 50 =
  22. 22.59 × 50 =
  23. 23.35 × 5 =
  24. 24.32 × 50 =
  25. 25.13 × 5 =
  26. 26.65 × 5 =
  27. 27.64 × 50 =
  28. 28.45 × 50 =
  29. 29.20 × 50 =
  30. 30.75 × 50 =
  31. 31.68 × 5 =
  32. 32.89 × 50 =
  33. 33.72 × 50 =
  34. 34.74 × 5 =
  35. 35.16 × 5 =
  36. 36.24 × 50 =
  37. 37.35 × 5 =
  38. 38.32 × 50 =
  39. 39.21 × 5 =
  40. 40.85 × 5 =

Answer key

  1. 170
  2. 3450
  3. 130
  4. 3050
  5. 425
  6. 115
  7. 2850
  8. 440
  9. 4800
  10. 1200
  11. 1950
  12. 2000
  13. 250
  14. 250
  15. 1500
  16. 1100
  17. 250
  18. 3550
  19. 1700
  20. 225
  21. 1500
  22. 2950
  23. 175
  24. 1600
  25. 65
  26. 325
  27. 3200
  28. 2250
  29. 1000
  30. 3750
  31. 340
  32. 4450
  33. 3600
  34. 370
  35. 80
  36. 1200
  37. 175
  38. 1600
  39. 105
  40. 425

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