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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 16 · 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. 1.24 × 50 =
  2. 2.30 × 5 =
  3. 3.42 × 50 =
  4. 4.44 × 5 =
  5. 5.91 × 50 =
  6. 6.24 × 5 =
  7. 7.22 × 5 =
  8. 8.27 × 5 =
  9. 9.54 × 50 =
  10. 10.23 × 5 =
  11. 11.26 × 5 =
  12. 12.42 × 50 =
  13. 13.70 × 5 =
  14. 14.93 × 50 =
  15. 15.28 × 50 =
  16. 16.23 × 5 =
  17. 17.33 × 5 =
  18. 18.92 × 5 =
  19. 19.21 × 50 =
  20. 20.16 × 5 =
  21. 21.35 × 5 =
  22. 22.77 × 50 =
  23. 23.83 × 5 =
  24. 24.22 × 50 =
  25. 25.43 × 5 =
  26. 26.20 × 5 =
  27. 27.63 × 50 =
  28. 28.21 × 5 =
  29. 29.63 × 5 =
  30. 30.70 × 50 =
  31. 31.80 × 50 =
  32. 32.14 × 50 =
  33. 33.52 × 5 =
  34. 34.31 × 5 =
  35. 35.72 × 5 =
  36. 36.58 × 50 =
  37. 37.31 × 5 =
  38. 38.77 × 50 =
  39. 39.20 × 50 =
  40. 40.48 × 5 =

Answer key

  1. 1200
  2. 150
  3. 2100
  4. 220
  5. 4550
  6. 120
  7. 110
  8. 135
  9. 2700
  10. 115
  11. 130
  12. 2100
  13. 350
  14. 4650
  15. 1400
  16. 115
  17. 165
  18. 460
  19. 1050
  20. 80
  21. 175
  22. 3850
  23. 415
  24. 1100
  25. 215
  26. 100
  27. 3150
  28. 105
  29. 315
  30. 3500
  31. 4000
  32. 700
  33. 260
  34. 155
  35. 360
  36. 2900
  37. 155
  38. 3850
  39. 1000
  40. 240

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