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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 459 · 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. 1.87 × 50 =
  2. 2.80 × 5 =
  3. 3.33 × 5 =
  4. 4.19 × 5 =
  5. 5.80 × 50 =
  6. 6.88 × 5 =
  7. 7.95 × 5 =
  8. 8.29 × 5 =
  9. 9.32 × 5 =
  10. 10.50 × 5 =
  11. 11.16 × 5 =
  12. 12.86 × 5 =
  13. 13.35 × 50 =
  14. 14.14 × 50 =
  15. 15.55 × 5 =
  16. 16.17 × 50 =
  17. 17.43 × 5 =
  18. 18.69 × 5 =
  19. 19.68 × 5 =
  20. 20.52 × 50 =
  21. 21.56 × 50 =
  22. 22.31 × 50 =
  23. 23.86 × 50 =
  24. 24.59 × 5 =
  25. 25.91 × 5 =
  26. 26.19 × 5 =
  27. 27.26 × 50 =
  28. 28.36 × 50 =
  29. 29.69 × 5 =
  30. 30.96 × 50 =
  31. 31.81 × 50 =
  32. 32.40 × 5 =
  33. 33.51 × 50 =
  34. 34.19 × 5 =
  35. 35.69 × 50 =
  36. 36.83 × 5 =
  37. 37.82 × 5 =
  38. 38.60 × 5 =
  39. 39.34 × 5 =
  40. 40.66 × 5 =

Answer key

  1. 4350
  2. 400
  3. 165
  4. 95
  5. 4000
  6. 440
  7. 475
  8. 145
  9. 160
  10. 250
  11. 80
  12. 430
  13. 1750
  14. 700
  15. 275
  16. 850
  17. 215
  18. 345
  19. 340
  20. 2600
  21. 2800
  22. 1550
  23. 4300
  24. 295
  25. 455
  26. 95
  27. 1300
  28. 1800
  29. 345
  30. 4800
  31. 4050
  32. 200
  33. 2550
  34. 95
  35. 3450
  36. 415
  37. 410
  38. 300
  39. 170
  40. 330

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