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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 183 · 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. 1.74 × 50 =
  2. 2.19 × 50 =
  3. 3.26 × 5 =
  4. 4.30 × 50 =
  5. 5.80 × 50 =
  6. 6.53 × 5 =
  7. 7.93 × 5 =
  8. 8.38 × 5 =
  9. 9.57 × 5 =
  10. 10.73 × 50 =
  11. 11.41 × 5 =
  12. 12.20 × 5 =
  13. 13.70 × 50 =
  14. 14.51 × 50 =
  15. 15.60 × 5 =
  16. 16.60 × 50 =
  17. 17.95 × 5 =
  18. 18.14 × 50 =
  19. 19.34 × 50 =
  20. 20.86 × 50 =
  21. 21.64 × 50 =
  22. 22.14 × 50 =
  23. 23.15 × 5 =
  24. 24.44 × 50 =
  25. 25.82 × 50 =
  26. 26.29 × 50 =
  27. 27.71 × 50 =
  28. 28.65 × 5 =
  29. 29.83 × 5 =
  30. 30.19 × 5 =
  31. 31.18 × 5 =
  32. 32.80 × 50 =
  33. 33.89 × 5 =
  34. 34.37 × 50 =
  35. 35.29 × 5 =
  36. 36.89 × 50 =
  37. 37.21 × 50 =
  38. 38.22 × 50 =
  39. 39.76 × 50 =
  40. 40.28 × 50 =

Answer key

  1. 3700
  2. 950
  3. 130
  4. 1500
  5. 4000
  6. 265
  7. 465
  8. 190
  9. 285
  10. 3650
  11. 205
  12. 100
  13. 3500
  14. 2550
  15. 300
  16. 3000
  17. 475
  18. 700
  19. 1700
  20. 4300
  21. 3200
  22. 700
  23. 75
  24. 2200
  25. 4100
  26. 1450
  27. 3550
  28. 325
  29. 415
  30. 95
  31. 90
  32. 4000
  33. 445
  34. 1850
  35. 145
  36. 4450
  37. 1050
  38. 1100
  39. 3800
  40. 1400

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