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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 726 · 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. 1.21 × 50 =
  2. 2.64 × 50 =
  3. 3.16 × 5 =
  4. 4.54 × 5 =
  5. 5.32 × 5 =
  6. 6.95 × 50 =
  7. 7.60 × 50 =
  8. 8.49 × 50 =
  9. 9.47 × 50 =
  10. 10.93 × 5 =
  11. 11.53 × 50 =
  12. 12.60 × 50 =
  13. 13.51 × 5 =
  14. 14.54 × 5 =
  15. 15.76 × 50 =
  16. 16.72 × 50 =
  17. 17.30 × 5 =
  18. 18.25 × 5 =
  19. 19.34 × 5 =
  20. 20.24 × 50 =
  21. 21.30 × 50 =
  22. 22.49 × 5 =
  23. 23.88 × 50 =
  24. 24.16 × 50 =
  25. 25.72 × 50 =
  26. 26.25 × 5 =
  27. 27.32 × 50 =
  28. 28.20 × 5 =
  29. 29.54 × 50 =
  30. 30.20 × 5 =
  31. 31.16 × 5 =
  32. 32.23 × 50 =
  33. 33.45 × 50 =
  34. 34.51 × 50 =
  35. 35.64 × 50 =
  36. 36.96 × 50 =
  37. 37.36 × 50 =
  38. 38.16 × 5 =
  39. 39.42 × 50 =
  40. 40.62 × 5 =

Answer key

  1. 1050
  2. 3200
  3. 80
  4. 270
  5. 160
  6. 4750
  7. 3000
  8. 2450
  9. 2350
  10. 465
  11. 2650
  12. 3000
  13. 255
  14. 270
  15. 3800
  16. 3600
  17. 150
  18. 125
  19. 170
  20. 1200
  21. 1500
  22. 245
  23. 4400
  24. 800
  25. 3600
  26. 125
  27. 1600
  28. 100
  29. 2700
  30. 100
  31. 80
  32. 1150
  33. 2250
  34. 2550
  35. 3200
  36. 4800
  37. 1800
  38. 80
  39. 2100
  40. 310

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