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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 866 · 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. 1.67 × 5 =
  2. 2.25 × 50 =
  3. 3.46 × 50 =
  4. 4.51 × 50 =
  5. 5.84 × 5 =
  6. 6.41 × 5 =
  7. 7.15 × 5 =
  8. 8.49 × 50 =
  9. 9.26 × 50 =
  10. 10.63 × 5 =
  11. 11.47 × 50 =
  12. 12.43 × 5 =
  13. 13.17 × 5 =
  14. 14.28 × 5 =
  15. 15.35 × 50 =
  16. 16.92 × 50 =
  17. 17.40 × 50 =
  18. 18.62 × 50 =
  19. 19.91 × 5 =
  20. 20.60 × 50 =
  21. 21.91 × 50 =
  22. 22.39 × 50 =
  23. 23.98 × 50 =
  24. 24.72 × 5 =
  25. 25.76 × 5 =
  26. 26.31 × 5 =
  27. 27.61 × 5 =
  28. 28.27 × 50 =
  29. 29.61 × 50 =
  30. 30.55 × 50 =
  31. 31.93 × 50 =
  32. 32.92 × 5 =
  33. 33.43 × 50 =
  34. 34.21 × 50 =
  35. 35.61 × 5 =
  36. 36.43 × 50 =
  37. 37.88 × 50 =
  38. 38.53 × 50 =
  39. 39.14 × 50 =
  40. 40.29 × 50 =

Answer key

  1. 335
  2. 1250
  3. 2300
  4. 2550
  5. 420
  6. 205
  7. 75
  8. 2450
  9. 1300
  10. 315
  11. 2350
  12. 215
  13. 85
  14. 140
  15. 1750
  16. 4600
  17. 2000
  18. 3100
  19. 455
  20. 3000
  21. 4550
  22. 1950
  23. 4900
  24. 360
  25. 380
  26. 155
  27. 305
  28. 1350
  29. 3050
  30. 2750
  31. 4650
  32. 460
  33. 2150
  34. 1050
  35. 305
  36. 2150
  37. 4400
  38. 2650
  39. 700
  40. 1450

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