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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 955 · 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. 1.95 × 50 =
  2. 2.39 × 50 =
  3. 3.90 × 5 =
  4. 4.71 × 5 =
  5. 5.34 × 5 =
  6. 6.58 × 50 =
  7. 7.84 × 5 =
  8. 8.48 × 5 =
  9. 9.73 × 5 =
  10. 10.32 × 50 =
  11. 11.27 × 50 =
  12. 12.83 × 5 =
  13. 13.48 × 50 =
  14. 14.53 × 50 =
  15. 15.26 × 50 =
  16. 16.76 × 5 =
  17. 17.80 × 50 =
  18. 18.58 × 5 =
  19. 19.55 × 5 =
  20. 20.32 × 5 =
  21. 21.67 × 5 =
  22. 22.71 × 50 =
  23. 23.61 × 5 =
  24. 24.50 × 50 =
  25. 25.12 × 5 =
  26. 26.50 × 5 =
  27. 27.87 × 5 =
  28. 28.45 × 5 =
  29. 29.82 × 5 =
  30. 30.95 × 50 =
  31. 31.17 × 50 =
  32. 32.29 × 5 =
  33. 33.58 × 5 =
  34. 34.35 × 5 =
  35. 35.90 × 50 =
  36. 36.76 × 5 =
  37. 37.73 × 50 =
  38. 38.25 × 50 =
  39. 39.31 × 5 =
  40. 40.87 × 50 =

Answer key

  1. 4750
  2. 1950
  3. 450
  4. 355
  5. 170
  6. 2900
  7. 420
  8. 240
  9. 365
  10. 1600
  11. 1350
  12. 415
  13. 2400
  14. 2650
  15. 1300
  16. 380
  17. 4000
  18. 290
  19. 275
  20. 160
  21. 335
  22. 3550
  23. 305
  24. 2500
  25. 60
  26. 250
  27. 435
  28. 225
  29. 410
  30. 4750
  31. 850
  32. 145
  33. 290
  34. 175
  35. 4500
  36. 380
  37. 3650
  38. 1250
  39. 155
  40. 4350

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