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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 270 · 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. 1.38 × 50 =
  2. 2.34 × 50 =
  3. 3.92 × 5 =
  4. 4.75 × 50 =
  5. 5.14 × 5 =
  6. 6.44 × 5 =
  7. 7.19 × 5 =
  8. 8.76 × 5 =
  9. 9.41 × 5 =
  10. 10.43 × 5 =
  11. 11.90 × 5 =
  12. 12.91 × 50 =
  13. 13.32 × 5 =
  14. 14.77 × 5 =
  15. 15.69 × 5 =
  16. 16.13 × 5 =
  17. 17.39 × 5 =
  18. 18.93 × 50 =
  19. 19.48 × 5 =
  20. 20.37 × 50 =
  21. 21.54 × 50 =
  22. 22.97 × 5 =
  23. 23.96 × 50 =
  24. 24.41 × 50 =
  25. 25.34 × 50 =
  26. 26.16 × 50 =
  27. 27.78 × 50 =
  28. 28.17 × 50 =
  29. 29.26 × 5 =
  30. 30.52 × 50 =
  31. 31.54 × 50 =
  32. 32.56 × 50 =
  33. 33.82 × 5 =
  34. 34.86 × 5 =
  35. 35.16 × 5 =
  36. 36.63 × 50 =
  37. 37.75 × 50 =
  38. 38.59 × 50 =
  39. 39.77 × 5 =
  40. 40.60 × 50 =

Answer key

  1. 1900
  2. 1700
  3. 460
  4. 3750
  5. 70
  6. 220
  7. 95
  8. 380
  9. 205
  10. 215
  11. 450
  12. 4550
  13. 160
  14. 385
  15. 345
  16. 65
  17. 195
  18. 4650
  19. 240
  20. 1850
  21. 2700
  22. 485
  23. 4800
  24. 2050
  25. 1700
  26. 800
  27. 3900
  28. 850
  29. 130
  30. 2600
  31. 2700
  32. 2800
  33. 410
  34. 430
  35. 80
  36. 3150
  37. 3750
  38. 2950
  39. 385
  40. 3000

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