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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 995 · 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. 1.36 × 5 =
  2. 2.94 × 50 =
  3. 3.21 × 5 =
  4. 4.25 × 5 =
  5. 5.27 × 50 =
  6. 6.70 × 50 =
  7. 7.24 × 50 =
  8. 8.75 × 50 =
  9. 9.48 × 5 =
  10. 10.73 × 50 =
  11. 11.46 × 5 =
  12. 12.37 × 5 =
  13. 13.32 × 50 =
  14. 14.92 × 50 =
  15. 15.20 × 5 =
  16. 16.45 × 5 =
  17. 17.41 × 50 =
  18. 18.84 × 50 =
  19. 19.51 × 50 =
  20. 20.16 × 50 =
  21. 21.46 × 50 =
  22. 22.14 × 5 =
  23. 23.88 × 50 =
  24. 24.36 × 5 =
  25. 25.69 × 50 =
  26. 26.74 × 50 =
  27. 27.34 × 50 =
  28. 28.59 × 50 =
  29. 29.48 × 5 =
  30. 30.29 × 5 =
  31. 31.80 × 5 =
  32. 32.57 × 5 =
  33. 33.96 × 5 =
  34. 34.93 × 50 =
  35. 35.96 × 5 =
  36. 36.51 × 5 =
  37. 37.65 × 5 =
  38. 38.22 × 5 =
  39. 39.21 × 5 =
  40. 40.94 × 5 =

Answer key

  1. 180
  2. 4700
  3. 105
  4. 125
  5. 1350
  6. 3500
  7. 1200
  8. 3750
  9. 240
  10. 3650
  11. 230
  12. 185
  13. 1600
  14. 4600
  15. 100
  16. 225
  17. 2050
  18. 4200
  19. 2550
  20. 800
  21. 2300
  22. 70
  23. 4400
  24. 180
  25. 3450
  26. 3700
  27. 1700
  28. 2950
  29. 240
  30. 145
  31. 400
  32. 285
  33. 480
  34. 4650
  35. 480
  36. 255
  37. 325
  38. 110
  39. 105
  40. 470

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