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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 859 · 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. 1.43 × 5 =
  2. 2.82 × 5 =
  3. 3.27 × 50 =
  4. 4.23 × 50 =
  5. 5.81 × 50 =
  6. 6.20 × 50 =
  7. 7.59 × 5 =
  8. 8.98 × 5 =
  9. 9.95 × 50 =
  10. 10.16 × 5 =
  11. 11.44 × 5 =
  12. 12.12 × 5 =
  13. 13.27 × 50 =
  14. 14.13 × 50 =
  15. 15.15 × 50 =
  16. 16.89 × 50 =
  17. 17.96 × 5 =
  18. 18.29 × 5 =
  19. 19.64 × 5 =
  20. 20.67 × 50 =
  21. 21.21 × 5 =
  22. 22.13 × 5 =
  23. 23.97 × 50 =
  24. 24.39 × 50 =
  25. 25.89 × 50 =
  26. 26.38 × 50 =
  27. 27.32 × 5 =
  28. 28.40 × 5 =
  29. 29.14 × 5 =
  30. 30.54 × 50 =
  31. 31.13 × 5 =
  32. 32.41 × 50 =
  33. 33.86 × 50 =
  34. 34.79 × 50 =
  35. 35.46 × 5 =
  36. 36.34 × 50 =
  37. 37.27 × 50 =
  38. 38.44 × 50 =
  39. 39.88 × 5 =
  40. 40.60 × 5 =

Answer key

  1. 215
  2. 410
  3. 1350
  4. 1150
  5. 4050
  6. 1000
  7. 295
  8. 490
  9. 4750
  10. 80
  11. 220
  12. 60
  13. 1350
  14. 650
  15. 750
  16. 4450
  17. 480
  18. 145
  19. 320
  20. 3350
  21. 105
  22. 65
  23. 4850
  24. 1950
  25. 4450
  26. 1900
  27. 160
  28. 200
  29. 70
  30. 2700
  31. 65
  32. 2050
  33. 4300
  34. 3950
  35. 230
  36. 1700
  37. 1350
  38. 2200
  39. 440
  40. 300

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