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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 856 · 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. 1.93 × 5 =
  2. 2.60 × 50 =
  3. 3.13 × 50 =
  4. 4.24 × 5 =
  5. 5.98 × 5 =
  6. 6.21 × 50 =
  7. 7.63 × 5 =
  8. 8.68 × 50 =
  9. 9.22 × 50 =
  10. 10.70 × 5 =
  11. 11.22 × 50 =
  12. 12.63 × 5 =
  13. 13.75 × 5 =
  14. 14.32 × 5 =
  15. 15.26 × 5 =
  16. 16.56 × 50 =
  17. 17.44 × 50 =
  18. 18.27 × 5 =
  19. 19.91 × 50 =
  20. 20.37 × 50 =
  21. 21.37 × 50 =
  22. 22.79 × 5 =
  23. 23.26 × 5 =
  24. 24.68 × 50 =
  25. 25.12 × 50 =
  26. 26.81 × 50 =
  27. 27.69 × 5 =
  28. 28.82 × 5 =
  29. 29.27 × 5 =
  30. 30.87 × 5 =
  31. 31.24 × 50 =
  32. 32.16 × 5 =
  33. 33.54 × 50 =
  34. 34.90 × 50 =
  35. 35.55 × 50 =
  36. 36.69 × 50 =
  37. 37.28 × 5 =
  38. 38.79 × 50 =
  39. 39.66 × 50 =
  40. 40.51 × 5 =

Answer key

  1. 465
  2. 3000
  3. 650
  4. 120
  5. 490
  6. 1050
  7. 315
  8. 3400
  9. 1100
  10. 350
  11. 1100
  12. 315
  13. 375
  14. 160
  15. 130
  16. 2800
  17. 2200
  18. 135
  19. 4550
  20. 1850
  21. 1850
  22. 395
  23. 130
  24. 3400
  25. 600
  26. 4050
  27. 345
  28. 410
  29. 135
  30. 435
  31. 1200
  32. 80
  33. 2700
  34. 4500
  35. 2750
  36. 3450
  37. 140
  38. 3950
  39. 3300
  40. 255

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