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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 953 · 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 × 50 =
  2. 2.89 × 50 =
  3. 3.58 × 5 =
  4. 4.15 × 50 =
  5. 5.95 × 5 =
  6. 6.77 × 50 =
  7. 7.70 × 5 =
  8. 8.76 × 50 =
  9. 9.79 × 5 =
  10. 10.71 × 5 =
  11. 11.39 × 5 =
  12. 12.34 × 5 =
  13. 13.34 × 50 =
  14. 14.41 × 5 =
  15. 15.49 × 50 =
  16. 16.20 × 50 =
  17. 17.26 × 50 =
  18. 18.51 × 5 =
  19. 19.93 × 5 =
  20. 20.18 × 5 =
  21. 21.75 × 50 =
  22. 22.74 × 5 =
  23. 23.63 × 5 =
  24. 24.83 × 50 =
  25. 25.13 × 50 =
  26. 26.42 × 50 =
  27. 27.29 × 5 =
  28. 28.27 × 5 =
  29. 29.34 × 50 =
  30. 30.96 × 5 =
  31. 31.81 × 50 =
  32. 32.47 × 5 =
  33. 33.22 × 50 =
  34. 34.46 × 50 =
  35. 35.37 × 50 =
  36. 36.59 × 5 =
  37. 37.98 × 50 =
  38. 38.20 × 50 =
  39. 39.59 × 50 =
  40. 40.67 × 5 =

Answer key

  1. 950
  2. 4450
  3. 290
  4. 750
  5. 475
  6. 3850
  7. 350
  8. 3800
  9. 395
  10. 355
  11. 195
  12. 170
  13. 1700
  14. 205
  15. 2450
  16. 1000
  17. 1300
  18. 255
  19. 465
  20. 90
  21. 3750
  22. 370
  23. 315
  24. 4150
  25. 650
  26. 2100
  27. 145
  28. 135
  29. 1700
  30. 480
  31. 4050
  32. 235
  33. 1100
  34. 2300
  35. 1850
  36. 295
  37. 4900
  38. 1000
  39. 2950
  40. 335

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