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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 931 · 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. 1.38 × 50 =
  2. 2.64 × 5 =
  3. 3.97 × 5 =
  4. 4.33 × 50 =
  5. 5.20 × 5 =
  6. 6.28 × 5 =
  7. 7.29 × 50 =
  8. 8.86 × 50 =
  9. 9.62 × 5 =
  10. 10.39 × 50 =
  11. 11.44 × 50 =
  12. 12.82 × 50 =
  13. 13.58 × 50 =
  14. 14.84 × 5 =
  15. 15.93 × 50 =
  16. 16.40 × 50 =
  17. 17.96 × 50 =
  18. 18.51 × 5 =
  19. 19.40 × 5 =
  20. 20.26 × 5 =
  21. 21.59 × 50 =
  22. 22.77 × 50 =
  23. 23.80 × 5 =
  24. 24.28 × 50 =
  25. 25.59 × 50 =
  26. 26.45 × 5 =
  27. 27.26 × 5 =
  28. 28.27 × 5 =
  29. 29.21 × 5 =
  30. 30.22 × 5 =
  31. 31.69 × 50 =
  32. 32.86 × 50 =
  33. 33.43 × 5 =
  34. 34.37 × 50 =
  35. 35.59 × 50 =
  36. 36.66 × 50 =
  37. 37.94 × 50 =
  38. 38.55 × 5 =
  39. 39.28 × 5 =
  40. 40.17 × 50 =

Answer key

  1. 1900
  2. 320
  3. 485
  4. 1650
  5. 100
  6. 140
  7. 1450
  8. 4300
  9. 310
  10. 1950
  11. 2200
  12. 4100
  13. 2900
  14. 420
  15. 4650
  16. 2000
  17. 4800
  18. 255
  19. 200
  20. 130
  21. 2950
  22. 3850
  23. 400
  24. 1400
  25. 2950
  26. 225
  27. 130
  28. 135
  29. 105
  30. 110
  31. 3450
  32. 4300
  33. 215
  34. 1850
  35. 2950
  36. 3300
  37. 4700
  38. 275
  39. 140
  40. 850

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