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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 992 · 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. 1.83 × 5 =
  2. 2.70 × 5 =
  3. 3.17 × 50 =
  4. 4.36 × 5 =
  5. 5.73 × 50 =
  6. 6.46 × 5 =
  7. 7.91 × 5 =
  8. 8.46 × 50 =
  9. 9.60 × 50 =
  10. 10.84 × 50 =
  11. 11.46 × 50 =
  12. 12.13 × 5 =
  13. 13.62 × 5 =
  14. 14.40 × 50 =
  15. 15.89 × 50 =
  16. 16.87 × 50 =
  17. 17.57 × 5 =
  18. 18.54 × 50 =
  19. 19.12 × 5 =
  20. 20.44 × 50 =
  21. 21.18 × 5 =
  22. 22.28 × 50 =
  23. 23.55 × 50 =
  24. 24.79 × 5 =
  25. 25.74 × 50 =
  26. 26.58 × 5 =
  27. 27.47 × 5 =
  28. 28.21 × 50 =
  29. 29.94 × 5 =
  30. 30.68 × 50 =
  31. 31.95 × 5 =
  32. 32.72 × 5 =
  33. 33.77 × 5 =
  34. 34.59 × 50 =
  35. 35.59 × 5 =
  36. 36.48 × 5 =
  37. 37.68 × 50 =
  38. 38.20 × 5 =
  39. 39.31 × 50 =
  40. 40.93 × 5 =

Answer key

  1. 415
  2. 350
  3. 850
  4. 180
  5. 3650
  6. 230
  7. 455
  8. 2300
  9. 3000
  10. 4200
  11. 2300
  12. 65
  13. 310
  14. 2000
  15. 4450
  16. 4350
  17. 285
  18. 2700
  19. 60
  20. 2200
  21. 90
  22. 1400
  23. 2750
  24. 395
  25. 3700
  26. 290
  27. 235
  28. 1050
  29. 470
  30. 3400
  31. 475
  32. 360
  33. 385
  34. 2950
  35. 295
  36. 240
  37. 3400
  38. 100
  39. 1550
  40. 465

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