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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 69 · 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. 1.33 × 5 =
  2. 2.62 × 50 =
  3. 3.12 × 50 =
  4. 4.34 × 50 =
  5. 5.28 × 5 =
  6. 6.17 × 50 =
  7. 7.93 × 50 =
  8. 8.82 × 5 =
  9. 9.21 × 5 =
  10. 10.17 × 50 =
  11. 11.55 × 5 =
  12. 12.31 × 50 =
  13. 13.84 × 50 =
  14. 14.94 × 50 =
  15. 15.54 × 50 =
  16. 16.35 × 5 =
  17. 17.39 × 5 =
  18. 18.86 × 50 =
  19. 19.98 × 50 =
  20. 20.97 × 50 =
  21. 21.89 × 50 =
  22. 22.25 × 50 =
  23. 23.64 × 5 =
  24. 24.93 × 50 =
  25. 25.58 × 5 =
  26. 26.21 × 50 =
  27. 27.89 × 5 =
  28. 28.93 × 5 =
  29. 29.28 × 5 =
  30. 30.85 × 5 =
  31. 31.49 × 5 =
  32. 32.28 × 5 =
  33. 33.43 × 5 =
  34. 34.36 × 5 =
  35. 35.40 × 5 =
  36. 36.77 × 5 =
  37. 37.33 × 50 =
  38. 38.35 × 5 =
  39. 39.76 × 50 =
  40. 40.28 × 5 =

Answer key

  1. 165
  2. 3100
  3. 600
  4. 1700
  5. 140
  6. 850
  7. 4650
  8. 410
  9. 105
  10. 850
  11. 275
  12. 1550
  13. 4200
  14. 4700
  15. 2700
  16. 175
  17. 195
  18. 4300
  19. 4900
  20. 4850
  21. 4450
  22. 1250
  23. 320
  24. 4650
  25. 290
  26. 1050
  27. 445
  28. 465
  29. 140
  30. 425
  31. 245
  32. 140
  33. 215
  34. 180
  35. 200
  36. 385
  37. 1650
  38. 175
  39. 3800
  40. 140

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