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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 32 · 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. 1.61 × 5 =
  2. 2.13 × 50 =
  3. 3.30 × 50 =
  4. 4.25 × 50 =
  5. 5.92 × 5 =
  6. 6.61 × 5 =
  7. 7.48 × 5 =
  8. 8.61 × 50 =
  9. 9.86 × 5 =
  10. 10.82 × 5 =
  11. 11.45 × 50 =
  12. 12.41 × 50 =
  13. 13.24 × 50 =
  14. 14.43 × 50 =
  15. 15.36 × 5 =
  16. 16.97 × 5 =
  17. 17.47 × 50 =
  18. 18.69 × 5 =
  19. 19.19 × 5 =
  20. 20.58 × 5 =
  21. 21.91 × 5 =
  22. 22.29 × 50 =
  23. 23.82 × 5 =
  24. 24.37 × 50 =
  25. 25.14 × 50 =
  26. 26.95 × 50 =
  27. 27.62 × 50 =
  28. 28.29 × 50 =
  29. 29.41 × 50 =
  30. 30.49 × 5 =
  31. 31.15 × 50 =
  32. 32.26 × 50 =
  33. 33.71 × 5 =
  34. 34.52 × 5 =
  35. 35.58 × 5 =
  36. 36.78 × 5 =
  37. 37.42 × 5 =
  38. 38.42 × 50 =
  39. 39.74 × 50 =
  40. 40.36 × 50 =

Answer key

  1. 305
  2. 650
  3. 1500
  4. 1250
  5. 460
  6. 305
  7. 240
  8. 3050
  9. 430
  10. 410
  11. 2250
  12. 2050
  13. 1200
  14. 2150
  15. 180
  16. 485
  17. 2350
  18. 345
  19. 95
  20. 290
  21. 455
  22. 1450
  23. 410
  24. 1850
  25. 700
  26. 4750
  27. 3100
  28. 1450
  29. 2050
  30. 245
  31. 750
  32. 1300
  33. 355
  34. 260
  35. 290
  36. 390
  37. 210
  38. 2100
  39. 3700
  40. 1800

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