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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 283 · 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. 1.53 × 50 =
  2. 2.18 × 5 =
  3. 3.54 × 5 =
  4. 4.88 × 5 =
  5. 5.32 × 5 =
  6. 6.64 × 5 =
  7. 7.28 × 50 =
  8. 8.49 × 50 =
  9. 9.54 × 50 =
  10. 10.36 × 5 =
  11. 11.30 × 5 =
  12. 12.15 × 5 =
  13. 13.32 × 50 =
  14. 14.43 × 50 =
  15. 15.56 × 5 =
  16. 16.26 × 50 =
  17. 17.72 × 5 =
  18. 18.50 × 5 =
  19. 19.47 × 50 =
  20. 20.32 × 50 =
  21. 21.38 × 5 =
  22. 22.29 × 5 =
  23. 23.44 × 5 =
  24. 24.84 × 5 =
  25. 25.92 × 50 =
  26. 26.77 × 5 =
  27. 27.26 × 5 =
  28. 28.13 × 5 =
  29. 29.71 × 5 =
  30. 30.65 × 50 =
  31. 31.55 × 50 =
  32. 32.94 × 50 =
  33. 33.28 × 5 =
  34. 34.44 × 50 =
  35. 35.26 × 5 =
  36. 36.64 × 5 =
  37. 37.29 × 50 =
  38. 38.94 × 50 =
  39. 39.50 × 50 =
  40. 40.78 × 50 =

Answer key

  1. 2650
  2. 90
  3. 270
  4. 440
  5. 160
  6. 320
  7. 1400
  8. 2450
  9. 2700
  10. 180
  11. 150
  12. 75
  13. 1600
  14. 2150
  15. 280
  16. 1300
  17. 360
  18. 250
  19. 2350
  20. 1600
  21. 190
  22. 145
  23. 220
  24. 420
  25. 4600
  26. 385
  27. 130
  28. 65
  29. 355
  30. 3250
  31. 2750
  32. 4700
  33. 140
  34. 2200
  35. 130
  36. 320
  37. 1450
  38. 4700
  39. 2500
  40. 3900

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