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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 242 · 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. 1.34 × 5 =
  2. 2.59 × 50 =
  3. 3.41 × 5 =
  4. 4.61 × 50 =
  5. 5.38 × 5 =
  6. 6.72 × 50 =
  7. 7.94 × 50 =
  8. 8.60 × 5 =
  9. 9.87 × 5 =
  10. 10.87 × 5 =
  11. 11.71 × 5 =
  12. 12.19 × 50 =
  13. 13.53 × 5 =
  14. 14.25 × 5 =
  15. 15.58 × 5 =
  16. 16.80 × 5 =
  17. 17.18 × 50 =
  18. 18.21 × 5 =
  19. 19.83 × 50 =
  20. 20.98 × 5 =
  21. 21.75 × 5 =
  22. 22.43 × 5 =
  23. 23.92 × 50 =
  24. 24.34 × 5 =
  25. 25.66 × 50 =
  26. 26.53 × 50 =
  27. 27.48 × 50 =
  28. 28.58 × 50 =
  29. 29.51 × 5 =
  30. 30.16 × 50 =
  31. 31.98 × 50 =
  32. 32.64 × 50 =
  33. 33.33 × 5 =
  34. 34.94 × 5 =
  35. 35.61 × 5 =
  36. 36.79 × 5 =
  37. 37.13 × 5 =
  38. 38.28 × 5 =
  39. 39.38 × 5 =
  40. 40.16 × 50 =

Answer key

  1. 170
  2. 2950
  3. 205
  4. 3050
  5. 190
  6. 3600
  7. 4700
  8. 300
  9. 435
  10. 435
  11. 355
  12. 950
  13. 265
  14. 125
  15. 290
  16. 400
  17. 900
  18. 105
  19. 4150
  20. 490
  21. 375
  22. 215
  23. 4600
  24. 170
  25. 3300
  26. 2650
  27. 2400
  28. 2900
  29. 255
  30. 800
  31. 4900
  32. 3200
  33. 165
  34. 470
  35. 305
  36. 395
  37. 65
  38. 140
  39. 190
  40. 800

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