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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 978 · 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. 1.49 × 50 =
  2. 2.64 × 5 =
  3. 3.67 × 5 =
  4. 4.69 × 50 =
  5. 5.90 × 50 =
  6. 6.16 × 50 =
  7. 7.54 × 5 =
  8. 8.73 × 5 =
  9. 9.85 × 5 =
  10. 10.55 × 5 =
  11. 11.70 × 50 =
  12. 12.30 × 50 =
  13. 13.57 × 50 =
  14. 14.92 × 5 =
  15. 15.60 × 50 =
  16. 16.66 × 50 =
  17. 17.88 × 50 =
  18. 18.71 × 5 =
  19. 19.37 × 5 =
  20. 20.26 × 5 =
  21. 21.34 × 50 =
  22. 22.43 × 50 =
  23. 23.46 × 50 =
  24. 24.79 × 50 =
  25. 25.47 × 5 =
  26. 26.16 × 5 =
  27. 27.39 × 5 =
  28. 28.65 × 50 =
  29. 29.92 × 5 =
  30. 30.93 × 5 =
  31. 31.79 × 5 =
  32. 32.28 × 50 =
  33. 33.69 × 50 =
  34. 34.85 × 5 =
  35. 35.51 × 5 =
  36. 36.53 × 50 =
  37. 37.32 × 5 =
  38. 38.55 × 5 =
  39. 39.71 × 50 =
  40. 40.32 × 5 =

Answer key

  1. 2450
  2. 320
  3. 335
  4. 3450
  5. 4500
  6. 800
  7. 270
  8. 365
  9. 425
  10. 275
  11. 3500
  12. 1500
  13. 2850
  14. 460
  15. 3000
  16. 3300
  17. 4400
  18. 355
  19. 185
  20. 130
  21. 1700
  22. 2150
  23. 2300
  24. 3950
  25. 235
  26. 80
  27. 195
  28. 3250
  29. 460
  30. 465
  31. 395
  32. 1400
  33. 3450
  34. 425
  35. 255
  36. 2650
  37. 160
  38. 275
  39. 3550
  40. 160

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