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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 822 · 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. 1.43 × 50 =
  2. 2.17 × 50 =
  3. 3.13 × 5 =
  4. 4.20 × 5 =
  5. 5.36 × 50 =
  6. 6.57 × 50 =
  7. 7.67 × 5 =
  8. 8.58 × 50 =
  9. 9.32 × 5 =
  10. 10.27 × 50 =
  11. 11.75 × 50 =
  12. 12.98 × 5 =
  13. 13.71 × 5 =
  14. 14.47 × 50 =
  15. 15.50 × 50 =
  16. 16.82 × 50 =
  17. 17.29 × 5 =
  18. 18.17 × 5 =
  19. 19.65 × 5 =
  20. 20.23 × 5 =
  21. 21.41 × 50 =
  22. 22.28 × 5 =
  23. 23.14 × 50 =
  24. 24.43 × 50 =
  25. 25.64 × 50 =
  26. 26.90 × 50 =
  27. 27.70 × 5 =
  28. 28.39 × 5 =
  29. 29.26 × 50 =
  30. 30.51 × 5 =
  31. 31.32 × 5 =
  32. 32.52 × 50 =
  33. 33.17 × 5 =
  34. 34.58 × 5 =
  35. 35.92 × 50 =
  36. 36.79 × 50 =
  37. 37.60 × 50 =
  38. 38.28 × 5 =
  39. 39.57 × 5 =
  40. 40.14 × 50 =

Answer key

  1. 2150
  2. 850
  3. 65
  4. 100
  5. 1800
  6. 2850
  7. 335
  8. 2900
  9. 160
  10. 1350
  11. 3750
  12. 490
  13. 355
  14. 2350
  15. 2500
  16. 4100
  17. 145
  18. 85
  19. 325
  20. 115
  21. 2050
  22. 140
  23. 700
  24. 2150
  25. 3200
  26. 4500
  27. 350
  28. 195
  29. 1300
  30. 255
  31. 160
  32. 2600
  33. 85
  34. 290
  35. 4600
  36. 3950
  37. 3000
  38. 140
  39. 285
  40. 700

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