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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 385 · 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. 1.28 × 5 =
  2. 2.44 × 50 =
  3. 3.52 × 50 =
  4. 4.62 × 50 =
  5. 5.97 × 5 =
  6. 6.86 × 5 =
  7. 7.15 × 5 =
  8. 8.50 × 5 =
  9. 9.70 × 5 =
  10. 10.25 × 5 =
  11. 11.58 × 5 =
  12. 12.17 × 50 =
  13. 13.80 × 50 =
  14. 14.70 × 50 =
  15. 15.85 × 5 =
  16. 16.24 × 5 =
  17. 17.83 × 50 =
  18. 18.17 × 5 =
  19. 19.77 × 5 =
  20. 20.94 × 50 =
  21. 21.14 × 50 =
  22. 22.19 × 50 =
  23. 23.16 × 5 =
  24. 24.28 × 50 =
  25. 25.77 × 5 =
  26. 26.26 × 50 =
  27. 27.79 × 5 =
  28. 28.26 × 50 =
  29. 29.96 × 5 =
  30. 30.15 × 5 =
  31. 31.53 × 5 =
  32. 32.94 × 50 =
  33. 33.30 × 50 =
  34. 34.42 × 5 =
  35. 35.62 × 5 =
  36. 36.12 × 5 =
  37. 37.76 × 5 =
  38. 38.15 × 50 =
  39. 39.82 × 5 =
  40. 40.57 × 5 =

Answer key

  1. 140
  2. 2200
  3. 2600
  4. 3100
  5. 485
  6. 430
  7. 75
  8. 250
  9. 350
  10. 125
  11. 290
  12. 850
  13. 4000
  14. 3500
  15. 425
  16. 120
  17. 4150
  18. 85
  19. 385
  20. 4700
  21. 700
  22. 950
  23. 80
  24. 1400
  25. 385
  26. 1300
  27. 395
  28. 1300
  29. 480
  30. 75
  31. 265
  32. 4700
  33. 1500
  34. 210
  35. 310
  36. 60
  37. 380
  38. 750
  39. 410
  40. 285

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