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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 918 · 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. 1.69 × 5 =
  2. 2.23 × 50 =
  3. 3.45 × 50 =
  4. 4.20 × 50 =
  5. 5.39 × 50 =
  6. 6.32 × 5 =
  7. 7.55 × 50 =
  8. 8.75 × 50 =
  9. 9.85 × 5 =
  10. 10.32 × 5 =
  11. 11.91 × 50 =
  12. 12.36 × 5 =
  13. 13.18 × 50 =
  14. 14.67 × 5 =
  15. 15.62 × 5 =
  16. 16.85 × 50 =
  17. 17.19 × 5 =
  18. 18.30 × 5 =
  19. 19.78 × 5 =
  20. 20.84 × 50 =
  21. 21.20 × 50 =
  22. 22.98 × 50 =
  23. 23.58 × 5 =
  24. 24.37 × 50 =
  25. 25.59 × 50 =
  26. 26.18 × 50 =
  27. 27.26 × 50 =
  28. 28.37 × 5 =
  29. 29.78 × 5 =
  30. 30.97 × 5 =
  31. 31.60 × 5 =
  32. 32.51 × 5 =
  33. 33.43 × 50 =
  34. 34.22 × 50 =
  35. 35.32 × 5 =
  36. 36.83 × 5 =
  37. 37.44 × 5 =
  38. 38.33 × 5 =
  39. 39.81 × 50 =
  40. 40.71 × 5 =

Answer key

  1. 345
  2. 1150
  3. 2250
  4. 1000
  5. 1950
  6. 160
  7. 2750
  8. 3750
  9. 425
  10. 160
  11. 4550
  12. 180
  13. 900
  14. 335
  15. 310
  16. 4250
  17. 95
  18. 150
  19. 390
  20. 4200
  21. 1000
  22. 4900
  23. 290
  24. 1850
  25. 2950
  26. 900
  27. 1300
  28. 185
  29. 390
  30. 485
  31. 300
  32. 255
  33. 2150
  34. 1100
  35. 160
  36. 415
  37. 220
  38. 165
  39. 4050
  40. 355

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