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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 750 · 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. 1.20 × 50 =
  2. 2.15 × 5 =
  3. 3.90 × 5 =
  4. 4.28 × 50 =
  5. 5.82 × 5 =
  6. 6.42 × 5 =
  7. 7.22 × 5 =
  8. 8.25 × 5 =
  9. 9.16 × 5 =
  10. 10.44 × 50 =
  11. 11.57 × 5 =
  12. 12.54 × 5 =
  13. 13.73 × 5 =
  14. 14.17 × 50 =
  15. 15.33 × 50 =
  16. 16.31 × 50 =
  17. 17.20 × 50 =
  18. 18.24 × 5 =
  19. 19.64 × 5 =
  20. 20.67 × 5 =
  21. 21.55 × 5 =
  22. 22.34 × 5 =
  23. 23.21 × 50 =
  24. 24.87 × 50 =
  25. 25.42 × 5 =
  26. 26.86 × 5 =
  27. 27.41 × 5 =
  28. 28.83 × 5 =
  29. 29.44 × 5 =
  30. 30.14 × 50 =
  31. 31.14 × 5 =
  32. 32.73 × 5 =
  33. 33.72 × 5 =
  34. 34.25 × 50 =
  35. 35.15 × 50 =
  36. 36.91 × 5 =
  37. 37.88 × 50 =
  38. 38.68 × 5 =
  39. 39.51 × 50 =
  40. 40.31 × 50 =

Answer key

  1. 1000
  2. 75
  3. 450
  4. 1400
  5. 410
  6. 210
  7. 110
  8. 125
  9. 80
  10. 2200
  11. 285
  12. 270
  13. 365
  14. 850
  15. 1650
  16. 1550
  17. 1000
  18. 120
  19. 320
  20. 335
  21. 275
  22. 170
  23. 1050
  24. 4350
  25. 210
  26. 430
  27. 205
  28. 415
  29. 220
  30. 700
  31. 70
  32. 365
  33. 360
  34. 1250
  35. 750
  36. 455
  37. 4400
  38. 340
  39. 2550
  40. 1550

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