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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 743 · 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. 1.72 × 50 =
  2. 2.52 × 5 =
  3. 3.30 × 50 =
  4. 4.25 × 50 =
  5. 5.59 × 50 =
  6. 6.86 × 50 =
  7. 7.50 × 5 =
  8. 8.68 × 50 =
  9. 9.58 × 5 =
  10. 10.59 × 5 =
  11. 11.32 × 5 =
  12. 12.89 × 50 =
  13. 13.93 × 5 =
  14. 14.30 × 5 =
  15. 15.18 × 5 =
  16. 16.62 × 50 =
  17. 17.40 × 50 =
  18. 18.51 × 50 =
  19. 19.86 × 5 =
  20. 20.93 × 50 =
  21. 21.43 × 50 =
  22. 22.13 × 5 =
  23. 23.20 × 50 =
  24. 24.41 × 50 =
  25. 25.82 × 5 =
  26. 26.78 × 5 =
  27. 27.37 × 5 =
  28. 28.87 × 50 =
  29. 29.85 × 50 =
  30. 30.32 × 50 =
  31. 31.65 × 50 =
  32. 32.55 × 50 =
  33. 33.65 × 5 =
  34. 34.83 × 5 =
  35. 35.44 × 50 =
  36. 36.91 × 5 =
  37. 37.89 × 50 =
  38. 38.71 × 50 =
  39. 39.19 × 50 =
  40. 40.24 × 5 =

Answer key

  1. 3600
  2. 260
  3. 1500
  4. 1250
  5. 2950
  6. 4300
  7. 250
  8. 3400
  9. 290
  10. 295
  11. 160
  12. 4450
  13. 465
  14. 150
  15. 90
  16. 3100
  17. 2000
  18. 2550
  19. 430
  20. 4650
  21. 2150
  22. 65
  23. 1000
  24. 2050
  25. 410
  26. 390
  27. 185
  28. 4350
  29. 4250
  30. 1600
  31. 3250
  32. 2750
  33. 325
  34. 415
  35. 2200
  36. 455
  37. 4450
  38. 3550
  39. 950
  40. 120

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