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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 556 · 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. 1.86 × 5 =
  2. 2.58 × 50 =
  3. 3.33 × 50 =
  4. 4.97 × 50 =
  5. 5.16 × 50 =
  6. 6.26 × 5 =
  7. 7.78 × 5 =
  8. 8.30 × 5 =
  9. 9.39 × 50 =
  10. 10.14 × 5 =
  11. 11.75 × 5 =
  12. 12.36 × 50 =
  13. 13.27 × 5 =
  14. 14.18 × 5 =
  15. 15.41 × 50 =
  16. 16.59 × 50 =
  17. 17.23 × 5 =
  18. 18.33 × 50 =
  19. 19.70 × 5 =
  20. 20.94 × 50 =
  21. 21.40 × 50 =
  22. 22.81 × 50 =
  23. 23.42 × 5 =
  24. 24.82 × 50 =
  25. 25.12 × 5 =
  26. 26.21 × 5 =
  27. 27.91 × 50 =
  28. 28.12 × 50 =
  29. 29.95 × 5 =
  30. 30.97 × 5 =
  31. 31.65 × 5 =
  32. 32.50 × 5 =
  33. 33.36 × 50 =
  34. 34.16 × 5 =
  35. 35.47 × 50 =
  36. 36.43 × 5 =
  37. 37.42 × 5 =
  38. 38.43 × 50 =
  39. 39.48 × 50 =
  40. 40.96 × 5 =

Answer key

  1. 430
  2. 2900
  3. 1650
  4. 4850
  5. 800
  6. 130
  7. 390
  8. 150
  9. 1950
  10. 70
  11. 375
  12. 1800
  13. 135
  14. 90
  15. 2050
  16. 2950
  17. 115
  18. 1650
  19. 350
  20. 4700
  21. 2000
  22. 4050
  23. 210
  24. 4100
  25. 60
  26. 105
  27. 4550
  28. 600
  29. 475
  30. 485
  31. 325
  32. 250
  33. 1800
  34. 80
  35. 2350
  36. 215
  37. 210
  38. 2150
  39. 2400
  40. 480

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