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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 673 · 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. 1.12 × 5 =
  2. 2.62 × 50 =
  3. 3.29 × 5 =
  4. 4.22 × 5 =
  5. 5.92 × 5 =
  6. 6.24 × 50 =
  7. 7.26 × 5 =
  8. 8.39 × 50 =
  9. 9.60 × 5 =
  10. 10.64 × 50 =
  11. 11.21 × 5 =
  12. 12.31 × 5 =
  13. 13.13 × 50 =
  14. 14.92 × 5 =
  15. 15.45 × 50 =
  16. 16.17 × 50 =
  17. 17.92 × 5 =
  18. 18.73 × 5 =
  19. 19.72 × 5 =
  20. 20.97 × 50 =
  21. 21.57 × 50 =
  22. 22.26 × 50 =
  23. 23.28 × 50 =
  24. 24.96 × 50 =
  25. 25.77 × 5 =
  26. 26.29 × 5 =
  27. 27.54 × 50 =
  28. 28.32 × 50 =
  29. 29.50 × 5 =
  30. 30.88 × 5 =
  31. 31.28 × 5 =
  32. 32.74 × 50 =
  33. 33.32 × 50 =
  34. 34.56 × 5 =
  35. 35.86 × 50 =
  36. 36.68 × 5 =
  37. 37.29 × 5 =
  38. 38.92 × 5 =
  39. 39.79 × 5 =
  40. 40.36 × 5 =

Answer key

  1. 60
  2. 3100
  3. 145
  4. 110
  5. 460
  6. 1200
  7. 130
  8. 1950
  9. 300
  10. 3200
  11. 105
  12. 155
  13. 650
  14. 460
  15. 2250
  16. 850
  17. 460
  18. 365
  19. 360
  20. 4850
  21. 2850
  22. 1300
  23. 1400
  24. 4800
  25. 385
  26. 145
  27. 2700
  28. 1600
  29. 250
  30. 440
  31. 140
  32. 3700
  33. 1600
  34. 280
  35. 4300
  36. 340
  37. 145
  38. 460
  39. 395
  40. 180

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