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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 433 · 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. 1.29 × 5 =
  2. 2.17 × 50 =
  3. 3.30 × 5 =
  4. 4.53 × 50 =
  5. 5.22 × 50 =
  6. 6.39 × 5 =
  7. 7.68 × 5 =
  8. 8.29 × 50 =
  9. 9.43 × 5 =
  10. 10.22 × 50 =
  11. 11.80 × 50 =
  12. 12.35 × 50 =
  13. 13.54 × 50 =
  14. 14.43 × 5 =
  15. 15.78 × 50 =
  16. 16.54 × 5 =
  17. 17.32 × 50 =
  18. 18.93 × 5 =
  19. 19.89 × 50 =
  20. 20.15 × 5 =
  21. 21.94 × 50 =
  22. 22.68 × 50 =
  23. 23.21 × 50 =
  24. 24.32 × 5 =
  25. 25.32 × 50 =
  26. 26.36 × 50 =
  27. 27.44 × 5 =
  28. 28.22 × 50 =
  29. 29.81 × 50 =
  30. 30.89 × 50 =
  31. 31.88 × 5 =
  32. 32.47 × 50 =
  33. 33.96 × 5 =
  34. 34.62 × 50 =
  35. 35.69 × 50 =
  36. 36.90 × 50 =
  37. 37.19 × 5 =
  38. 38.19 × 5 =
  39. 39.40 × 50 =
  40. 40.92 × 5 =

Answer key

  1. 145
  2. 850
  3. 150
  4. 2650
  5. 1100
  6. 195
  7. 340
  8. 1450
  9. 215
  10. 1100
  11. 4000
  12. 1750
  13. 2700
  14. 215
  15. 3900
  16. 270
  17. 1600
  18. 465
  19. 4450
  20. 75
  21. 4700
  22. 3400
  23. 1050
  24. 160
  25. 1600
  26. 1800
  27. 220
  28. 1100
  29. 4050
  30. 4450
  31. 440
  32. 2350
  33. 480
  34. 3100
  35. 3450
  36. 4500
  37. 95
  38. 95
  39. 2000
  40. 460

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