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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 505 · 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. 1.52 × 50 =
  2. 2.58 × 50 =
  3. 3.14 × 50 =
  4. 4.74 × 5 =
  5. 5.28 × 50 =
  6. 6.20 × 5 =
  7. 7.34 × 5 =
  8. 8.20 × 50 =
  9. 9.90 × 50 =
  10. 10.34 × 5 =
  11. 11.35 × 50 =
  12. 12.47 × 5 =
  13. 13.68 × 5 =
  14. 14.55 × 5 =
  15. 15.39 × 5 =
  16. 16.13 × 5 =
  17. 17.48 × 5 =
  18. 18.70 × 50 =
  19. 19.30 × 5 =
  20. 20.88 × 5 =
  21. 21.62 × 5 =
  22. 22.74 × 50 =
  23. 23.66 × 50 =
  24. 24.44 × 50 =
  25. 25.86 × 50 =
  26. 26.46 × 50 =
  27. 27.32 × 50 =
  28. 28.18 × 5 =
  29. 29.36 × 5 =
  30. 30.20 × 50 =
  31. 31.86 × 5 =
  32. 32.78 × 50 =
  33. 33.83 × 5 =
  34. 34.19 × 5 =
  35. 35.15 × 50 =
  36. 36.52 × 50 =
  37. 37.65 × 5 =
  38. 38.75 × 50 =
  39. 39.18 × 50 =
  40. 40.90 × 5 =

Answer key

  1. 2600
  2. 2900
  3. 700
  4. 370
  5. 1400
  6. 100
  7. 170
  8. 1000
  9. 4500
  10. 170
  11. 1750
  12. 235
  13. 340
  14. 275
  15. 195
  16. 65
  17. 240
  18. 3500
  19. 150
  20. 440
  21. 310
  22. 3700
  23. 3300
  24. 2200
  25. 4300
  26. 2300
  27. 1600
  28. 90
  29. 180
  30. 1000
  31. 430
  32. 3900
  33. 415
  34. 95
  35. 750
  36. 2600
  37. 325
  38. 3750
  39. 900
  40. 450

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