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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 888 · 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 × 5 =
  2. 2.31 × 50 =
  3. 3.86 × 5 =
  4. 4.28 × 50 =
  5. 5.42 × 5 =
  6. 6.17 × 5 =
  7. 7.17 × 50 =
  8. 8.22 × 5 =
  9. 9.57 × 5 =
  10. 10.23 × 50 =
  11. 11.54 × 5 =
  12. 12.32 × 50 =
  13. 13.14 × 5 =
  14. 14.48 × 50 =
  15. 15.46 × 50 =
  16. 16.13 × 5 =
  17. 17.19 × 5 =
  18. 18.35 × 5 =
  19. 19.22 × 50 =
  20. 20.43 × 5 =
  21. 21.41 × 50 =
  22. 22.34 × 50 =
  23. 23.76 × 5 =
  24. 24.31 × 50 =
  25. 25.83 × 5 =
  26. 26.96 × 50 =
  27. 27.97 × 5 =
  28. 28.26 × 5 =
  29. 29.93 × 50 =
  30. 30.45 × 5 =
  31. 31.48 × 50 =
  32. 32.76 × 5 =
  33. 33.17 × 5 =
  34. 34.15 × 5 =
  35. 35.69 × 5 =
  36. 36.75 × 5 =
  37. 37.98 × 5 =
  38. 38.14 × 5 =
  39. 39.77 × 5 =
  40. 40.59 × 5 =

Answer key

  1. 95
  2. 1550
  3. 430
  4. 1400
  5. 210
  6. 85
  7. 850
  8. 110
  9. 285
  10. 1150
  11. 270
  12. 1600
  13. 70
  14. 2400
  15. 2300
  16. 65
  17. 95
  18. 175
  19. 1100
  20. 215
  21. 2050
  22. 1700
  23. 380
  24. 1550
  25. 415
  26. 4800
  27. 485
  28. 130
  29. 4650
  30. 225
  31. 2400
  32. 380
  33. 85
  34. 75
  35. 345
  36. 375
  37. 490
  38. 70
  39. 385
  40. 295

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