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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 140 · 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. 1.59 × 5 =
  2. 2.94 × 5 =
  3. 3.47 × 5 =
  4. 4.20 × 50 =
  5. 5.54 × 5 =
  6. 6.76 × 50 =
  7. 7.38 × 5 =
  8. 8.60 × 50 =
  9. 9.15 × 5 =
  10. 10.84 × 5 =
  11. 11.32 × 5 =
  12. 12.21 × 50 =
  13. 13.74 × 5 =
  14. 14.71 × 5 =
  15. 15.17 × 5 =
  16. 16.75 × 50 =
  17. 17.34 × 5 =
  18. 18.19 × 5 =
  19. 19.30 × 5 =
  20. 20.60 × 5 =
  21. 21.64 × 50 =
  22. 22.21 × 5 =
  23. 23.28 × 50 =
  24. 24.78 × 5 =
  25. 25.54 × 5 =
  26. 26.87 × 5 =
  27. 27.43 × 5 =
  28. 28.60 × 5 =
  29. 29.98 × 50 =
  30. 30.74 × 5 =
  31. 31.83 × 50 =
  32. 32.30 × 50 =
  33. 33.64 × 5 =
  34. 34.67 × 50 =
  35. 35.71 × 5 =
  36. 36.27 × 50 =
  37. 37.14 × 5 =
  38. 38.40 × 5 =
  39. 39.40 × 50 =
  40. 40.63 × 5 =

Answer key

  1. 295
  2. 470
  3. 235
  4. 1000
  5. 270
  6. 3800
  7. 190
  8. 3000
  9. 75
  10. 420
  11. 160
  12. 1050
  13. 370
  14. 355
  15. 85
  16. 3750
  17. 170
  18. 95
  19. 150
  20. 300
  21. 3200
  22. 105
  23. 1400
  24. 390
  25. 270
  26. 435
  27. 215
  28. 300
  29. 4900
  30. 370
  31. 4150
  32. 1500
  33. 320
  34. 3350
  35. 355
  36. 1350
  37. 70
  38. 200
  39. 2000
  40. 315

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