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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 427 · 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. 1.46 × 50 =
  2. 2.87 × 5 =
  3. 3.35 × 5 =
  4. 4.12 × 5 =
  5. 5.61 × 50 =
  6. 6.73 × 50 =
  7. 7.72 × 50 =
  8. 8.85 × 50 =
  9. 9.73 × 5 =
  10. 10.33 × 5 =
  11. 11.12 × 50 =
  12. 12.85 × 50 =
  13. 13.18 × 50 =
  14. 14.66 × 5 =
  15. 15.50 × 50 =
  16. 16.60 × 5 =
  17. 17.26 × 50 =
  18. 18.89 × 5 =
  19. 19.51 × 5 =
  20. 20.14 × 50 =
  21. 21.22 × 5 =
  22. 22.52 × 5 =
  23. 23.36 × 50 =
  24. 24.27 × 50 =
  25. 25.29 × 5 =
  26. 26.98 × 5 =
  27. 27.46 × 50 =
  28. 28.56 × 50 =
  29. 29.50 × 50 =
  30. 30.89 × 50 =
  31. 31.96 × 5 =
  32. 32.20 × 50 =
  33. 33.24 × 50 =
  34. 34.94 × 5 =
  35. 35.64 × 50 =
  36. 36.29 × 5 =
  37. 37.20 × 50 =
  38. 38.29 × 5 =
  39. 39.37 × 5 =
  40. 40.55 × 5 =

Answer key

  1. 2300
  2. 435
  3. 175
  4. 60
  5. 3050
  6. 3650
  7. 3600
  8. 4250
  9. 365
  10. 165
  11. 600
  12. 4250
  13. 900
  14. 330
  15. 2500
  16. 300
  17. 1300
  18. 445
  19. 255
  20. 700
  21. 110
  22. 260
  23. 1800
  24. 1350
  25. 145
  26. 490
  27. 2300
  28. 2800
  29. 2500
  30. 4450
  31. 480
  32. 1000
  33. 1200
  34. 470
  35. 3200
  36. 145
  37. 1000
  38. 145
  39. 185
  40. 275

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