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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 694 · 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. 1.43 × 50 =
  2. 2.23 × 50 =
  3. 3.63 × 5 =
  4. 4.20 × 5 =
  5. 5.68 × 50 =
  6. 6.12 × 50 =
  7. 7.23 × 50 =
  8. 8.74 × 50 =
  9. 9.95 × 50 =
  10. 10.98 × 5 =
  11. 11.30 × 5 =
  12. 12.13 × 5 =
  13. 13.56 × 50 =
  14. 14.87 × 50 =
  15. 15.16 × 50 =
  16. 16.74 × 5 =
  17. 17.75 × 5 =
  18. 18.71 × 5 =
  19. 19.39 × 5 =
  20. 20.21 × 5 =
  21. 21.30 × 50 =
  22. 22.44 × 5 =
  23. 23.84 × 50 =
  24. 24.37 × 50 =
  25. 25.66 × 50 =
  26. 26.36 × 50 =
  27. 27.86 × 5 =
  28. 28.30 × 5 =
  29. 29.86 × 5 =
  30. 30.60 × 50 =
  31. 31.63 × 5 =
  32. 32.74 × 5 =
  33. 33.63 × 50 =
  34. 34.50 × 5 =
  35. 35.31 × 50 =
  36. 36.61 × 50 =
  37. 37.14 × 50 =
  38. 38.90 × 5 =
  39. 39.44 × 5 =
  40. 40.21 × 50 =

Answer key

  1. 2150
  2. 1150
  3. 315
  4. 100
  5. 3400
  6. 600
  7. 1150
  8. 3700
  9. 4750
  10. 490
  11. 150
  12. 65
  13. 2800
  14. 4350
  15. 800
  16. 370
  17. 375
  18. 355
  19. 195
  20. 105
  21. 1500
  22. 220
  23. 4200
  24. 1850
  25. 3300
  26. 1800
  27. 430
  28. 150
  29. 430
  30. 3000
  31. 315
  32. 370
  33. 3150
  34. 250
  35. 1550
  36. 3050
  37. 700
  38. 450
  39. 220
  40. 1050

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