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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 827 · 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. 1.29 × 5 =
  2. 2.78 × 50 =
  3. 3.71 × 50 =
  4. 4.19 × 50 =
  5. 5.58 × 5 =
  6. 6.12 × 5 =
  7. 7.22 × 50 =
  8. 8.72 × 5 =
  9. 9.55 × 50 =
  10. 10.96 × 5 =
  11. 11.27 × 50 =
  12. 12.55 × 50 =
  13. 13.75 × 5 =
  14. 14.44 × 50 =
  15. 15.42 × 50 =
  16. 16.48 × 50 =
  17. 17.21 × 5 =
  18. 18.43 × 5 =
  19. 19.74 × 50 =
  20. 20.61 × 50 =
  21. 21.86 × 5 =
  22. 22.61 × 50 =
  23. 23.68 × 50 =
  24. 24.75 × 5 =
  25. 25.91 × 5 =
  26. 26.46 × 50 =
  27. 27.86 × 5 =
  28. 28.77 × 5 =
  29. 29.76 × 50 =
  30. 30.85 × 50 =
  31. 31.38 × 50 =
  32. 32.62 × 50 =
  33. 33.25 × 50 =
  34. 34.63 × 5 =
  35. 35.54 × 50 =
  36. 36.98 × 5 =
  37. 37.44 × 5 =
  38. 38.42 × 5 =
  39. 39.77 × 5 =
  40. 40.97 × 50 =

Answer key

  1. 145
  2. 3900
  3. 3550
  4. 950
  5. 290
  6. 60
  7. 1100
  8. 360
  9. 2750
  10. 480
  11. 1350
  12. 2750
  13. 375
  14. 2200
  15. 2100
  16. 2400
  17. 105
  18. 215
  19. 3700
  20. 3050
  21. 430
  22. 3050
  23. 3400
  24. 375
  25. 455
  26. 2300
  27. 430
  28. 385
  29. 3800
  30. 4250
  31. 1900
  32. 3100
  33. 1250
  34. 315
  35. 2700
  36. 490
  37. 220
  38. 210
  39. 385
  40. 4850

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