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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 979 · 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. 1.14 × 50 =
  2. 2.21 × 5 =
  3. 3.46 × 50 =
  4. 4.15 × 5 =
  5. 5.92 × 50 =
  6. 6.69 × 50 =
  7. 7.56 × 5 =
  8. 8.87 × 5 =
  9. 9.40 × 5 =
  10. 10.28 × 50 =
  11. 11.93 × 5 =
  12. 12.90 × 50 =
  13. 13.64 × 5 =
  14. 14.66 × 50 =
  15. 15.61 × 5 =
  16. 16.15 × 5 =
  17. 17.74 × 5 =
  18. 18.82 × 5 =
  19. 19.15 × 5 =
  20. 20.72 × 5 =
  21. 21.19 × 5 =
  22. 22.96 × 5 =
  23. 23.77 × 5 =
  24. 24.29 × 5 =
  25. 25.12 × 50 =
  26. 26.60 × 50 =
  27. 27.51 × 5 =
  28. 28.96 × 5 =
  29. 29.70 × 50 =
  30. 30.56 × 5 =
  31. 31.69 × 5 =
  32. 32.33 × 50 =
  33. 33.44 × 50 =
  34. 34.43 × 5 =
  35. 35.30 × 5 =
  36. 36.62 × 50 =
  37. 37.15 × 5 =
  38. 38.56 × 5 =
  39. 39.25 × 50 =
  40. 40.83 × 5 =

Answer key

  1. 700
  2. 105
  3. 2300
  4. 75
  5. 4600
  6. 3450
  7. 280
  8. 435
  9. 200
  10. 1400
  11. 465
  12. 4500
  13. 320
  14. 3300
  15. 305
  16. 75
  17. 370
  18. 410
  19. 75
  20. 360
  21. 95
  22. 480
  23. 385
  24. 145
  25. 600
  26. 3000
  27. 255
  28. 480
  29. 3500
  30. 280
  31. 345
  32. 1650
  33. 2200
  34. 215
  35. 150
  36. 3100
  37. 75
  38. 280
  39. 1250
  40. 415

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