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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 952 · 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. 1.23 × 5 =
  2. 2.22 × 5 =
  3. 3.98 × 5 =
  4. 4.85 × 50 =
  5. 5.88 × 5 =
  6. 6.79 × 5 =
  7. 7.85 × 50 =
  8. 8.82 × 5 =
  9. 9.12 × 5 =
  10. 10.75 × 50 =
  11. 11.66 × 5 =
  12. 12.69 × 50 =
  13. 13.90 × 50 =
  14. 14.75 × 50 =
  15. 15.49 × 5 =
  16. 16.97 × 5 =
  17. 17.97 × 5 =
  18. 18.70 × 50 =
  19. 19.36 × 5 =
  20. 20.74 × 50 =
  21. 21.16 × 5 =
  22. 22.83 × 50 =
  23. 23.70 × 50 =
  24. 24.30 × 50 =
  25. 25.92 × 50 =
  26. 26.59 × 5 =
  27. 27.40 × 50 =
  28. 28.83 × 5 =
  29. 29.89 × 50 =
  30. 30.85 × 5 =
  31. 31.57 × 50 =
  32. 32.86 × 50 =
  33. 33.51 × 50 =
  34. 34.54 × 5 =
  35. 35.63 × 50 =
  36. 36.42 × 50 =
  37. 37.95 × 50 =
  38. 38.28 × 5 =
  39. 39.29 × 50 =
  40. 40.84 × 5 =

Answer key

  1. 115
  2. 110
  3. 490
  4. 4250
  5. 440
  6. 395
  7. 4250
  8. 410
  9. 60
  10. 3750
  11. 330
  12. 3450
  13. 4500
  14. 3750
  15. 245
  16. 485
  17. 485
  18. 3500
  19. 180
  20. 3700
  21. 80
  22. 4150
  23. 3500
  24. 1500
  25. 4600
  26. 295
  27. 2000
  28. 415
  29. 4450
  30. 425
  31. 2850
  32. 4300
  33. 2550
  34. 270
  35. 3150
  36. 2100
  37. 4750
  38. 140
  39. 1450
  40. 420

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