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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 836 · 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. 1.19 × 5 =
  2. 2.31 × 50 =
  3. 3.41 × 50 =
  4. 4.92 × 5 =
  5. 5.28 × 5 =
  6. 6.27 × 5 =
  7. 7.28 × 50 =
  8. 8.21 × 50 =
  9. 9.87 × 5 =
  10. 10.32 × 50 =
  11. 11.69 × 50 =
  12. 12.69 × 5 =
  13. 13.54 × 5 =
  14. 14.25 × 5 =
  15. 15.83 × 5 =
  16. 16.48 × 50 =
  17. 17.26 × 50 =
  18. 18.49 × 5 =
  19. 19.35 × 5 =
  20. 20.19 × 5 =
  21. 21.77 × 50 =
  22. 22.42 × 50 =
  23. 23.56 × 50 =
  24. 24.57 × 50 =
  25. 25.55 × 5 =
  26. 26.12 × 50 =
  27. 27.80 × 5 =
  28. 28.16 × 50 =
  29. 29.78 × 5 =
  30. 30.59 × 50 =
  31. 31.92 × 5 =
  32. 32.96 × 50 =
  33. 33.59 × 50 =
  34. 34.44 × 5 =
  35. 35.65 × 50 =
  36. 36.55 × 5 =
  37. 37.50 × 5 =
  38. 38.64 × 50 =
  39. 39.86 × 5 =
  40. 40.43 × 50 =

Answer key

  1. 95
  2. 1550
  3. 2050
  4. 460
  5. 140
  6. 135
  7. 1400
  8. 1050
  9. 435
  10. 1600
  11. 3450
  12. 345
  13. 270
  14. 125
  15. 415
  16. 2400
  17. 1300
  18. 245
  19. 175
  20. 95
  21. 3850
  22. 2100
  23. 2800
  24. 2850
  25. 275
  26. 600
  27. 400
  28. 800
  29. 390
  30. 2950
  31. 460
  32. 4800
  33. 2950
  34. 220
  35. 3250
  36. 275
  37. 250
  38. 3200
  39. 430
  40. 2150

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