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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 567 · 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. 1.92 × 5 =
  2. 2.17 × 50 =
  3. 3.28 × 5 =
  4. 4.43 × 50 =
  5. 5.83 × 5 =
  6. 6.73 × 50 =
  7. 7.34 × 5 =
  8. 8.14 × 5 =
  9. 9.33 × 50 =
  10. 10.30 × 5 =
  11. 11.40 × 5 =
  12. 12.14 × 5 =
  13. 13.26 × 5 =
  14. 14.56 × 5 =
  15. 15.19 × 50 =
  16. 16.31 × 5 =
  17. 17.17 × 50 =
  18. 18.23 × 50 =
  19. 19.26 × 5 =
  20. 20.23 × 50 =
  21. 21.20 × 5 =
  22. 22.28 × 5 =
  23. 23.65 × 50 =
  24. 24.45 × 50 =
  25. 25.29 × 50 =
  26. 26.60 × 5 =
  27. 27.30 × 5 =
  28. 28.16 × 5 =
  29. 29.61 × 5 =
  30. 30.46 × 5 =
  31. 31.68 × 5 =
  32. 32.16 × 5 =
  33. 33.82 × 5 =
  34. 34.69 × 5 =
  35. 35.25 × 5 =
  36. 36.20 × 50 =
  37. 37.55 × 5 =
  38. 38.28 × 50 =
  39. 39.24 × 50 =
  40. 40.18 × 5 =

Answer key

  1. 460
  2. 850
  3. 140
  4. 2150
  5. 415
  6. 3650
  7. 170
  8. 70
  9. 1650
  10. 150
  11. 200
  12. 70
  13. 130
  14. 280
  15. 950
  16. 155
  17. 850
  18. 1150
  19. 130
  20. 1150
  21. 100
  22. 140
  23. 3250
  24. 2250
  25. 1450
  26. 300
  27. 150
  28. 80
  29. 305
  30. 230
  31. 340
  32. 80
  33. 410
  34. 345
  35. 125
  36. 1000
  37. 275
  38. 1400
  39. 1200
  40. 90

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