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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 838 · 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. 1.26 × 50 =
  2. 2.57 × 5 =
  3. 3.41 × 5 =
  4. 4.20 × 50 =
  5. 5.94 × 50 =
  6. 6.25 × 50 =
  7. 7.71 × 50 =
  8. 8.79 × 50 =
  9. 9.44 × 5 =
  10. 10.95 × 5 =
  11. 11.34 × 50 =
  12. 12.71 × 5 =
  13. 13.74 × 5 =
  14. 14.74 × 50 =
  15. 15.75 × 5 =
  16. 16.59 × 5 =
  17. 17.68 × 5 =
  18. 18.95 × 5 =
  19. 19.70 × 5 =
  20. 20.21 × 5 =
  21. 21.23 × 5 =
  22. 22.15 × 5 =
  23. 23.24 × 5 =
  24. 24.55 × 5 =
  25. 25.90 × 5 =
  26. 26.56 × 50 =
  27. 27.13 × 5 =
  28. 28.39 × 5 =
  29. 29.43 × 5 =
  30. 30.20 × 5 =
  31. 31.34 × 5 =
  32. 32.52 × 5 =
  33. 33.27 × 5 =
  34. 34.75 × 50 =
  35. 35.34 × 5 =
  36. 36.40 × 5 =
  37. 37.48 × 5 =
  38. 38.88 × 50 =
  39. 39.34 × 5 =
  40. 40.98 × 5 =

Answer key

  1. 1300
  2. 285
  3. 205
  4. 1000
  5. 4700
  6. 1250
  7. 3550
  8. 3950
  9. 220
  10. 475
  11. 1700
  12. 355
  13. 370
  14. 3700
  15. 375
  16. 295
  17. 340
  18. 475
  19. 350
  20. 105
  21. 115
  22. 75
  23. 120
  24. 275
  25. 450
  26. 2800
  27. 65
  28. 195
  29. 215
  30. 100
  31. 170
  32. 260
  33. 135
  34. 3750
  35. 170
  36. 200
  37. 240
  38. 4400
  39. 170
  40. 490

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