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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 596 · 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. 1.92 × 50 =
  2. 2.78 × 5 =
  3. 3.27 × 5 =
  4. 4.96 × 50 =
  5. 5.76 × 50 =
  6. 6.20 × 5 =
  7. 7.36 × 50 =
  8. 8.81 × 50 =
  9. 9.30 × 50 =
  10. 10.12 × 5 =
  11. 11.74 × 50 =
  12. 12.53 × 50 =
  13. 13.82 × 50 =
  14. 14.38 × 50 =
  15. 15.48 × 50 =
  16. 16.62 × 50 =
  17. 17.19 × 50 =
  18. 18.31 × 50 =
  19. 19.53 × 5 =
  20. 20.57 × 5 =
  21. 21.95 × 50 =
  22. 22.20 × 5 =
  23. 23.95 × 5 =
  24. 24.92 × 5 =
  25. 25.69 × 5 =
  26. 26.22 × 50 =
  27. 27.66 × 50 =
  28. 28.80 × 5 =
  29. 29.82 × 5 =
  30. 30.54 × 5 =
  31. 31.82 × 50 =
  32. 32.13 × 5 =
  33. 33.42 × 50 =
  34. 34.30 × 50 =
  35. 35.36 × 5 =
  36. 36.20 × 50 =
  37. 37.59 × 5 =
  38. 38.81 × 5 =
  39. 39.46 × 5 =
  40. 40.28 × 5 =

Answer key

  1. 4600
  2. 390
  3. 135
  4. 4800
  5. 3800
  6. 100
  7. 1800
  8. 4050
  9. 1500
  10. 60
  11. 3700
  12. 2650
  13. 4100
  14. 1900
  15. 2400
  16. 3100
  17. 950
  18. 1550
  19. 265
  20. 285
  21. 4750
  22. 100
  23. 475
  24. 460
  25. 345
  26. 1100
  27. 3300
  28. 400
  29. 410
  30. 270
  31. 4100
  32. 65
  33. 2100
  34. 1500
  35. 180
  36. 1000
  37. 295
  38. 405
  39. 230
  40. 140

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