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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 729 · 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. 1.69 × 5 =
  2. 2.79 × 50 =
  3. 3.72 × 5 =
  4. 4.33 × 50 =
  5. 5.23 × 5 =
  6. 6.18 × 5 =
  7. 7.46 × 5 =
  8. 8.51 × 5 =
  9. 9.40 × 5 =
  10. 10.21 × 50 =
  11. 11.21 × 50 =
  12. 12.75 × 50 =
  13. 13.32 × 50 =
  14. 14.38 × 5 =
  15. 15.46 × 50 =
  16. 16.55 × 5 =
  17. 17.67 × 5 =
  18. 18.31 × 50 =
  19. 19.26 × 5 =
  20. 20.76 × 50 =
  21. 21.85 × 50 =
  22. 22.54 × 50 =
  23. 23.29 × 5 =
  24. 24.72 × 5 =
  25. 25.56 × 5 =
  26. 26.89 × 5 =
  27. 27.59 × 50 =
  28. 28.31 × 50 =
  29. 29.51 × 5 =
  30. 30.89 × 50 =
  31. 31.56 × 50 =
  32. 32.27 × 50 =
  33. 33.63 × 5 =
  34. 34.88 × 5 =
  35. 35.62 × 50 =
  36. 36.65 × 50 =
  37. 37.48 × 5 =
  38. 38.23 × 50 =
  39. 39.16 × 50 =
  40. 40.33 × 5 =

Answer key

  1. 345
  2. 3950
  3. 360
  4. 1650
  5. 115
  6. 90
  7. 230
  8. 255
  9. 200
  10. 1050
  11. 1050
  12. 3750
  13. 1600
  14. 190
  15. 2300
  16. 275
  17. 335
  18. 1550
  19. 130
  20. 3800
  21. 4250
  22. 2700
  23. 145
  24. 360
  25. 280
  26. 445
  27. 2950
  28. 1550
  29. 255
  30. 4450
  31. 2800
  32. 1350
  33. 315
  34. 440
  35. 3100
  36. 3250
  37. 240
  38. 1150
  39. 800
  40. 165

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