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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 690 · 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. 1.75 × 50 =
  2. 2.15 × 5 =
  3. 3.75 × 5 =
  4. 4.26 × 5 =
  5. 5.81 × 5 =
  6. 6.83 × 50 =
  7. 7.65 × 5 =
  8. 8.75 × 5 =
  9. 9.46 × 50 =
  10. 10.86 × 50 =
  11. 11.70 × 50 =
  12. 12.22 × 5 =
  13. 13.76 × 5 =
  14. 14.28 × 50 =
  15. 15.45 × 50 =
  16. 16.76 × 50 =
  17. 17.30 × 50 =
  18. 18.56 × 5 =
  19. 19.91 × 50 =
  20. 20.69 × 50 =
  21. 21.85 × 50 =
  22. 22.98 × 5 =
  23. 23.91 × 50 =
  24. 24.87 × 5 =
  25. 25.25 × 5 =
  26. 26.41 × 5 =
  27. 27.54 × 5 =
  28. 28.20 × 50 =
  29. 29.28 × 5 =
  30. 30.27 × 50 =
  31. 31.78 × 5 =
  32. 32.60 × 50 =
  33. 33.74 × 50 =
  34. 34.74 × 5 =
  35. 35.69 × 50 =
  36. 36.18 × 50 =
  37. 37.26 × 5 =
  38. 38.56 × 5 =
  39. 39.30 × 5 =
  40. 40.43 × 50 =

Answer key

  1. 3750
  2. 75
  3. 375
  4. 130
  5. 405
  6. 4150
  7. 325
  8. 375
  9. 2300
  10. 4300
  11. 3500
  12. 110
  13. 380
  14. 1400
  15. 2250
  16. 3800
  17. 1500
  18. 280
  19. 4550
  20. 3450
  21. 4250
  22. 490
  23. 4550
  24. 435
  25. 125
  26. 205
  27. 270
  28. 1000
  29. 140
  30. 1350
  31. 390
  32. 3000
  33. 3700
  34. 370
  35. 3450
  36. 900
  37. 130
  38. 280
  39. 150
  40. 2150

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