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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 383 · 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. 1.16 × 50 =
  2. 2.39 × 5 =
  3. 3.22 × 50 =
  4. 4.97 × 50 =
  5. 5.68 × 50 =
  6. 6.68 × 5 =
  7. 7.90 × 50 =
  8. 8.34 × 50 =
  9. 9.79 × 5 =
  10. 10.36 × 50 =
  11. 11.18 × 5 =
  12. 12.36 × 50 =
  13. 13.82 × 50 =
  14. 14.52 × 5 =
  15. 15.40 × 5 =
  16. 16.67 × 5 =
  17. 17.23 × 50 =
  18. 18.95 × 5 =
  19. 19.61 × 5 =
  20. 20.51 × 50 =
  21. 21.65 × 5 =
  22. 22.32 × 50 =
  23. 23.24 × 5 =
  24. 24.81 × 50 =
  25. 25.88 × 50 =
  26. 26.45 × 50 =
  27. 27.13 × 5 =
  28. 28.70 × 5 =
  29. 29.66 × 5 =
  30. 30.20 × 5 =
  31. 31.41 × 5 =
  32. 32.39 × 5 =
  33. 33.88 × 50 =
  34. 34.37 × 50 =
  35. 35.33 × 50 =
  36. 36.88 × 5 =
  37. 37.34 × 5 =
  38. 38.87 × 50 =
  39. 39.62 × 5 =
  40. 40.25 × 50 =

Answer key

  1. 800
  2. 195
  3. 1100
  4. 4850
  5. 3400
  6. 340
  7. 4500
  8. 1700
  9. 395
  10. 1800
  11. 90
  12. 1800
  13. 4100
  14. 260
  15. 200
  16. 335
  17. 1150
  18. 475
  19. 305
  20. 2550
  21. 325
  22. 1600
  23. 120
  24. 4050
  25. 4400
  26. 2250
  27. 65
  28. 350
  29. 330
  30. 100
  31. 205
  32. 195
  33. 4400
  34. 1850
  35. 1650
  36. 440
  37. 170
  38. 4350
  39. 310
  40. 1250

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