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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 818 · 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. 1.58 × 5 =
  2. 2.82 × 5 =
  3. 3.23 × 50 =
  4. 4.67 × 5 =
  5. 5.65 × 50 =
  6. 6.20 × 5 =
  7. 7.97 × 5 =
  8. 8.27 × 5 =
  9. 9.81 × 5 =
  10. 10.25 × 50 =
  11. 11.70 × 5 =
  12. 12.46 × 5 =
  13. 13.72 × 5 =
  14. 14.30 × 50 =
  15. 15.77 × 50 =
  16. 16.91 × 5 =
  17. 17.16 × 5 =
  18. 18.24 × 5 =
  19. 19.28 × 50 =
  20. 20.82 × 5 =
  21. 21.29 × 5 =
  22. 22.88 × 5 =
  23. 23.42 × 50 =
  24. 24.42 × 5 =
  25. 25.61 × 5 =
  26. 26.24 × 5 =
  27. 27.32 × 50 =
  28. 28.90 × 50 =
  29. 29.63 × 50 =
  30. 30.16 × 50 =
  31. 31.78 × 50 =
  32. 32.53 × 5 =
  33. 33.57 × 50 =
  34. 34.86 × 5 =
  35. 35.59 × 50 =
  36. 36.38 × 50 =
  37. 37.19 × 50 =
  38. 38.83 × 5 =
  39. 39.32 × 5 =
  40. 40.36 × 50 =

Answer key

  1. 290
  2. 410
  3. 1150
  4. 335
  5. 3250
  6. 100
  7. 485
  8. 135
  9. 405
  10. 1250
  11. 350
  12. 230
  13. 360
  14. 1500
  15. 3850
  16. 455
  17. 80
  18. 120
  19. 1400
  20. 410
  21. 145
  22. 440
  23. 2100
  24. 210
  25. 305
  26. 120
  27. 1600
  28. 4500
  29. 3150
  30. 800
  31. 3900
  32. 265
  33. 2850
  34. 430
  35. 2950
  36. 1900
  37. 950
  38. 415
  39. 160
  40. 1800

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