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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 25 · 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. 1.79 × 5 =
  2. 2.72 × 5 =
  3. 3.37 × 50 =
  4. 4.59 × 5 =
  5. 5.49 × 5 =
  6. 6.59 × 5 =
  7. 7.78 × 50 =
  8. 8.51 × 5 =
  9. 9.46 × 5 =
  10. 10.36 × 5 =
  11. 11.33 × 5 =
  12. 12.46 × 5 =
  13. 13.16 × 5 =
  14. 14.22 × 5 =
  15. 15.32 × 50 =
  16. 16.89 × 50 =
  17. 17.68 × 5 =
  18. 18.58 × 50 =
  19. 19.40 × 5 =
  20. 20.84 × 5 =
  21. 21.33 × 5 =
  22. 22.62 × 50 =
  23. 23.19 × 50 =
  24. 24.74 × 5 =
  25. 25.87 × 5 =
  26. 26.26 × 5 =
  27. 27.80 × 5 =
  28. 28.17 × 50 =
  29. 29.53 × 5 =
  30. 30.31 × 5 =
  31. 31.49 × 5 =
  32. 32.67 × 5 =
  33. 33.36 × 5 =
  34. 34.73 × 5 =
  35. 35.16 × 5 =
  36. 36.77 × 50 =
  37. 37.92 × 50 =
  38. 38.25 × 5 =
  39. 39.24 × 5 =
  40. 40.63 × 5 =

Answer key

  1. 395
  2. 360
  3. 1850
  4. 295
  5. 245
  6. 295
  7. 3900
  8. 255
  9. 230
  10. 180
  11. 165
  12. 230
  13. 80
  14. 110
  15. 1600
  16. 4450
  17. 340
  18. 2900
  19. 200
  20. 420
  21. 165
  22. 3100
  23. 950
  24. 370
  25. 435
  26. 130
  27. 400
  28. 850
  29. 265
  30. 155
  31. 245
  32. 335
  33. 180
  34. 365
  35. 80
  36. 3850
  37. 4600
  38. 125
  39. 120
  40. 315

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