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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 965 · 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. 1.18 × 5 =
  2. 2.95 × 50 =
  3. 3.37 × 5 =
  4. 4.78 × 50 =
  5. 5.54 × 5 =
  6. 6.16 × 50 =
  7. 7.21 × 50 =
  8. 8.37 × 5 =
  9. 9.23 × 50 =
  10. 10.56 × 50 =
  11. 11.32 × 50 =
  12. 12.16 × 50 =
  13. 13.39 × 5 =
  14. 14.77 × 50 =
  15. 15.74 × 50 =
  16. 16.42 × 5 =
  17. 17.87 × 50 =
  18. 18.90 × 5 =
  19. 19.76 × 5 =
  20. 20.18 × 50 =
  21. 21.22 × 5 =
  22. 22.60 × 50 =
  23. 23.14 × 50 =
  24. 24.28 × 5 =
  25. 25.38 × 5 =
  26. 26.58 × 50 =
  27. 27.57 × 5 =
  28. 28.24 × 5 =
  29. 29.96 × 5 =
  30. 30.18 × 50 =
  31. 31.30 × 50 =
  32. 32.97 × 50 =
  33. 33.66 × 5 =
  34. 34.68 × 50 =
  35. 35.26 × 50 =
  36. 36.17 × 50 =
  37. 37.92 × 5 =
  38. 38.31 × 5 =
  39. 39.22 × 50 =
  40. 40.31 × 50 =

Answer key

  1. 90
  2. 4750
  3. 185
  4. 3900
  5. 270
  6. 800
  7. 1050
  8. 185
  9. 1150
  10. 2800
  11. 1600
  12. 800
  13. 195
  14. 3850
  15. 3700
  16. 210
  17. 4350
  18. 450
  19. 380
  20. 900
  21. 110
  22. 3000
  23. 700
  24. 140
  25. 190
  26. 2900
  27. 285
  28. 120
  29. 480
  30. 900
  31. 1500
  32. 4850
  33. 330
  34. 3400
  35. 1300
  36. 850
  37. 460
  38. 155
  39. 1100
  40. 1550

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