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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 481 · 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. 1.95 × 50 =
  2. 2.64 × 50 =
  3. 3.84 × 5 =
  4. 4.82 × 50 =
  5. 5.58 × 5 =
  6. 6.65 × 5 =
  7. 7.86 × 5 =
  8. 8.96 × 50 =
  9. 9.59 × 5 =
  10. 10.71 × 50 =
  11. 11.64 × 50 =
  12. 12.57 × 50 =
  13. 13.77 × 5 =
  14. 14.19 × 5 =
  15. 15.79 × 5 =
  16. 16.72 × 5 =
  17. 17.24 × 50 =
  18. 18.52 × 5 =
  19. 19.43 × 5 =
  20. 20.18 × 5 =
  21. 21.96 × 5 =
  22. 22.17 × 5 =
  23. 23.51 × 50 =
  24. 24.48 × 5 =
  25. 25.31 × 50 =
  26. 26.21 × 5 =
  27. 27.42 × 50 =
  28. 28.15 × 5 =
  29. 29.74 × 5 =
  30. 30.85 × 50 =
  31. 31.37 × 50 =
  32. 32.12 × 50 =
  33. 33.35 × 5 =
  34. 34.62 × 50 =
  35. 35.61 × 50 =
  36. 36.37 × 50 =
  37. 37.46 × 50 =
  38. 38.75 × 5 =
  39. 39.15 × 5 =
  40. 40.89 × 50 =

Answer key

  1. 4750
  2. 3200
  3. 420
  4. 4100
  5. 290
  6. 325
  7. 430
  8. 4800
  9. 295
  10. 3550
  11. 3200
  12. 2850
  13. 385
  14. 95
  15. 395
  16. 360
  17. 1200
  18. 260
  19. 215
  20. 90
  21. 480
  22. 85
  23. 2550
  24. 240
  25. 1550
  26. 105
  27. 2100
  28. 75
  29. 370
  30. 4250
  31. 1850
  32. 600
  33. 175
  34. 3100
  35. 3050
  36. 1850
  37. 2300
  38. 375
  39. 75
  40. 4450

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