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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 880 · 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. 1.35 × 5 =
  2. 2.57 × 5 =
  3. 3.35 × 5 =
  4. 4.35 × 5 =
  5. 5.78 × 50 =
  6. 6.50 × 50 =
  7. 7.26 × 5 =
  8. 8.30 × 50 =
  9. 9.82 × 5 =
  10. 10.22 × 50 =
  11. 11.25 × 5 =
  12. 12.78 × 5 =
  13. 13.82 × 50 =
  14. 14.29 × 5 =
  15. 15.21 × 5 =
  16. 16.12 × 5 =
  17. 17.22 × 50 =
  18. 18.60 × 5 =
  19. 19.52 × 5 =
  20. 20.26 × 50 =
  21. 21.79 × 5 =
  22. 22.45 × 5 =
  23. 23.21 × 5 =
  24. 24.28 × 5 =
  25. 25.27 × 5 =
  26. 26.62 × 50 =
  27. 27.70 × 5 =
  28. 28.46 × 50 =
  29. 29.51 × 5 =
  30. 30.76 × 5 =
  31. 31.20 × 5 =
  32. 32.90 × 50 =
  33. 33.60 × 50 =
  34. 34.72 × 5 =
  35. 35.89 × 5 =
  36. 36.29 × 5 =
  37. 37.86 × 50 =
  38. 38.95 × 5 =
  39. 39.72 × 5 =
  40. 40.18 × 5 =

Answer key

  1. 175
  2. 285
  3. 175
  4. 175
  5. 3900
  6. 2500
  7. 130
  8. 1500
  9. 410
  10. 1100
  11. 125
  12. 390
  13. 4100
  14. 145
  15. 105
  16. 60
  17. 1100
  18. 300
  19. 260
  20. 1300
  21. 395
  22. 225
  23. 105
  24. 140
  25. 135
  26. 3100
  27. 350
  28. 2300
  29. 255
  30. 380
  31. 100
  32. 4500
  33. 3000
  34. 360
  35. 445
  36. 145
  37. 4300
  38. 475
  39. 360
  40. 90

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