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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 313 · 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. 1.50 × 5 =
  2. 2.89 × 50 =
  3. 3.13 × 50 =
  4. 4.23 × 50 =
  5. 5.24 × 50 =
  6. 6.20 × 50 =
  7. 7.17 × 50 =
  8. 8.45 × 5 =
  9. 9.82 × 5 =
  10. 10.66 × 50 =
  11. 11.16 × 5 =
  12. 12.25 × 50 =
  13. 13.72 × 50 =
  14. 14.29 × 50 =
  15. 15.15 × 5 =
  16. 16.71 × 5 =
  17. 17.15 × 5 =
  18. 18.39 × 50 =
  19. 19.77 × 5 =
  20. 20.92 × 50 =
  21. 21.64 × 5 =
  22. 22.29 × 50 =
  23. 23.37 × 5 =
  24. 24.58 × 5 =
  25. 25.78 × 5 =
  26. 26.91 × 50 =
  27. 27.77 × 5 =
  28. 28.12 × 5 =
  29. 29.21 × 5 =
  30. 30.73 × 50 =
  31. 31.32 × 50 =
  32. 32.92 × 5 =
  33. 33.24 × 5 =
  34. 34.58 × 50 =
  35. 35.45 × 5 =
  36. 36.53 × 50 =
  37. 37.35 × 5 =
  38. 38.63 × 5 =
  39. 39.26 × 5 =
  40. 40.29 × 5 =

Answer key

  1. 250
  2. 4450
  3. 650
  4. 1150
  5. 1200
  6. 1000
  7. 850
  8. 225
  9. 410
  10. 3300
  11. 80
  12. 1250
  13. 3600
  14. 1450
  15. 75
  16. 355
  17. 75
  18. 1950
  19. 385
  20. 4600
  21. 320
  22. 1450
  23. 185
  24. 290
  25. 390
  26. 4550
  27. 385
  28. 60
  29. 105
  30. 3650
  31. 1600
  32. 460
  33. 120
  34. 2900
  35. 225
  36. 2650
  37. 175
  38. 315
  39. 130
  40. 145

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