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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 272 · 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. 1.15 × 5 =
  2. 2.97 × 5 =
  3. 3.74 × 5 =
  4. 4.89 × 5 =
  5. 5.28 × 50 =
  6. 6.54 × 5 =
  7. 7.58 × 5 =
  8. 8.83 × 50 =
  9. 9.22 × 5 =
  10. 10.51 × 50 =
  11. 11.12 × 50 =
  12. 12.98 × 50 =
  13. 13.40 × 50 =
  14. 14.68 × 50 =
  15. 15.13 × 5 =
  16. 16.82 × 50 =
  17. 17.63 × 50 =
  18. 18.14 × 5 =
  19. 19.62 × 50 =
  20. 20.36 × 50 =
  21. 21.78 × 50 =
  22. 22.76 × 5 =
  23. 23.81 × 5 =
  24. 24.77 × 5 =
  25. 25.48 × 50 =
  26. 26.88 × 50 =
  27. 27.54 × 5 =
  28. 28.31 × 50 =
  29. 29.25 × 5 =
  30. 30.18 × 5 =
  31. 31.81 × 5 =
  32. 32.86 × 50 =
  33. 33.32 × 50 =
  34. 34.21 × 5 =
  35. 35.68 × 50 =
  36. 36.56 × 50 =
  37. 37.64 × 5 =
  38. 38.89 × 50 =
  39. 39.43 × 50 =
  40. 40.65 × 5 =

Answer key

  1. 75
  2. 485
  3. 370
  4. 445
  5. 1400
  6. 270
  7. 290
  8. 4150
  9. 110
  10. 2550
  11. 600
  12. 4900
  13. 2000
  14. 3400
  15. 65
  16. 4100
  17. 3150
  18. 70
  19. 3100
  20. 1800
  21. 3900
  22. 380
  23. 405
  24. 385
  25. 2400
  26. 4400
  27. 270
  28. 1550
  29. 125
  30. 90
  31. 405
  32. 4300
  33. 1600
  34. 105
  35. 3400
  36. 2800
  37. 320
  38. 4450
  39. 2150
  40. 325

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