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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 925 · 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. 1.95 × 50 =
  2. 2.25 × 5 =
  3. 3.79 × 5 =
  4. 4.19 × 50 =
  5. 5.56 × 5 =
  6. 6.22 × 50 =
  7. 7.68 × 5 =
  8. 8.93 × 5 =
  9. 9.63 × 50 =
  10. 10.87 × 50 =
  11. 11.45 × 50 =
  12. 12.56 × 5 =
  13. 13.43 × 50 =
  14. 14.58 × 5 =
  15. 15.17 × 5 =
  16. 16.41 × 50 =
  17. 17.64 × 50 =
  18. 18.58 × 50 =
  19. 19.43 × 5 =
  20. 20.95 × 50 =
  21. 21.64 × 50 =
  22. 22.16 × 50 =
  23. 23.54 × 5 =
  24. 24.40 × 5 =
  25. 25.91 × 50 =
  26. 26.41 × 5 =
  27. 27.85 × 50 =
  28. 28.75 × 5 =
  29. 29.45 × 50 =
  30. 30.34 × 50 =
  31. 31.22 × 5 =
  32. 32.34 × 5 =
  33. 33.98 × 50 =
  34. 34.46 × 5 =
  35. 35.66 × 5 =
  36. 36.30 × 50 =
  37. 37.26 × 50 =
  38. 38.45 × 50 =
  39. 39.16 × 5 =
  40. 40.23 × 50 =

Answer key

  1. 4750
  2. 125
  3. 395
  4. 950
  5. 280
  6. 1100
  7. 340
  8. 465
  9. 3150
  10. 4350
  11. 2250
  12. 280
  13. 2150
  14. 290
  15. 85
  16. 2050
  17. 3200
  18. 2900
  19. 215
  20. 4750
  21. 3200
  22. 800
  23. 270
  24. 200
  25. 4550
  26. 205
  27. 4250
  28. 375
  29. 2250
  30. 1700
  31. 110
  32. 170
  33. 4900
  34. 230
  35. 330
  36. 1500
  37. 1300
  38. 2250
  39. 80
  40. 1150

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