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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 560 · 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. 1.89 × 50 =
  2. 2.42 × 5 =
  3. 3.18 × 5 =
  4. 4.87 × 5 =
  5. 5.38 × 5 =
  6. 6.92 × 5 =
  7. 7.33 × 5 =
  8. 8.59 × 50 =
  9. 9.98 × 5 =
  10. 10.38 × 5 =
  11. 11.14 × 5 =
  12. 12.42 × 50 =
  13. 13.88 × 50 =
  14. 14.92 × 5 =
  15. 15.45 × 50 =
  16. 16.44 × 5 =
  17. 17.98 × 5 =
  18. 18.40 × 50 =
  19. 19.13 × 5 =
  20. 20.72 × 5 =
  21. 21.62 × 5 =
  22. 22.83 × 50 =
  23. 23.21 × 50 =
  24. 24.97 × 50 =
  25. 25.89 × 5 =
  26. 26.40 × 50 =
  27. 27.17 × 5 =
  28. 28.63 × 5 =
  29. 29.33 × 50 =
  30. 30.47 × 50 =
  31. 31.75 × 5 =
  32. 32.42 × 50 =
  33. 33.36 × 50 =
  34. 34.29 × 5 =
  35. 35.12 × 50 =
  36. 36.29 × 50 =
  37. 37.94 × 50 =
  38. 38.15 × 5 =
  39. 39.79 × 5 =
  40. 40.50 × 50 =

Answer key

  1. 4450
  2. 210
  3. 90
  4. 435
  5. 190
  6. 460
  7. 165
  8. 2950
  9. 490
  10. 190
  11. 70
  12. 2100
  13. 4400
  14. 460
  15. 2250
  16. 220
  17. 490
  18. 2000
  19. 65
  20. 360
  21. 310
  22. 4150
  23. 1050
  24. 4850
  25. 445
  26. 2000
  27. 85
  28. 315
  29. 1650
  30. 2350
  31. 375
  32. 2100
  33. 1800
  34. 145
  35. 600
  36. 1450
  37. 4700
  38. 75
  39. 395
  40. 2500

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