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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 919 · 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. 1.46 × 5 =
  2. 2.68 × 50 =
  3. 3.42 × 5 =
  4. 4.31 × 50 =
  5. 5.70 × 50 =
  6. 6.24 × 50 =
  7. 7.42 × 50 =
  8. 8.36 × 50 =
  9. 9.45 × 50 =
  10. 10.95 × 5 =
  11. 11.38 × 5 =
  12. 12.58 × 5 =
  13. 13.67 × 50 =
  14. 14.55 × 5 =
  15. 15.31 × 5 =
  16. 16.12 × 5 =
  17. 17.18 × 5 =
  18. 18.68 × 5 =
  19. 19.17 × 5 =
  20. 20.55 × 5 =
  21. 21.65 × 50 =
  22. 22.58 × 5 =
  23. 23.17 × 5 =
  24. 24.20 × 5 =
  25. 25.72 × 5 =
  26. 26.56 × 5 =
  27. 27.54 × 5 =
  28. 28.29 × 50 =
  29. 29.22 × 5 =
  30. 30.60 × 5 =
  31. 31.85 × 50 =
  32. 32.93 × 50 =
  33. 33.94 × 50 =
  34. 34.91 × 5 =
  35. 35.30 × 50 =
  36. 36.84 × 5 =
  37. 37.36 × 50 =
  38. 38.37 × 50 =
  39. 39.66 × 50 =
  40. 40.66 × 50 =

Answer key

  1. 230
  2. 3400
  3. 210
  4. 1550
  5. 3500
  6. 1200
  7. 2100
  8. 1800
  9. 2250
  10. 475
  11. 190
  12. 290
  13. 3350
  14. 275
  15. 155
  16. 60
  17. 90
  18. 340
  19. 85
  20. 275
  21. 3250
  22. 290
  23. 85
  24. 100
  25. 360
  26. 280
  27. 270
  28. 1450
  29. 110
  30. 300
  31. 4250
  32. 4650
  33. 4700
  34. 455
  35. 1500
  36. 420
  37. 1800
  38. 1850
  39. 3300
  40. 3300

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