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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 220 · 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. 1.56 × 5 =
  2. 2.56 × 5 =
  3. 3.92 × 50 =
  4. 4.70 × 5 =
  5. 5.37 × 5 =
  6. 6.57 × 50 =
  7. 7.89 × 5 =
  8. 8.61 × 50 =
  9. 9.58 × 50 =
  10. 10.60 × 5 =
  11. 11.45 × 50 =
  12. 12.78 × 50 =
  13. 13.87 × 50 =
  14. 14.26 × 50 =
  15. 15.50 × 5 =
  16. 16.76 × 50 =
  17. 17.18 × 5 =
  18. 18.86 × 50 =
  19. 19.84 × 5 =
  20. 20.46 × 5 =
  21. 21.30 × 50 =
  22. 22.47 × 5 =
  23. 23.91 × 50 =
  24. 24.13 × 50 =
  25. 25.66 × 5 =
  26. 26.64 × 5 =
  27. 27.97 × 5 =
  28. 28.73 × 50 =
  29. 29.62 × 5 =
  30. 30.37 × 5 =
  31. 31.73 × 50 =
  32. 32.83 × 5 =
  33. 33.50 × 5 =
  34. 34.98 × 50 =
  35. 35.30 × 5 =
  36. 36.71 × 50 =
  37. 37.77 × 50 =
  38. 38.29 × 50 =
  39. 39.64 × 5 =
  40. 40.26 × 5 =

Answer key

  1. 280
  2. 280
  3. 4600
  4. 350
  5. 185
  6. 2850
  7. 445
  8. 3050
  9. 2900
  10. 300
  11. 2250
  12. 3900
  13. 4350
  14. 1300
  15. 250
  16. 3800
  17. 90
  18. 4300
  19. 420
  20. 230
  21. 1500
  22. 235
  23. 4550
  24. 650
  25. 330
  26. 320
  27. 485
  28. 3650
  29. 310
  30. 185
  31. 3650
  32. 415
  33. 250
  34. 4900
  35. 150
  36. 3550
  37. 3850
  38. 1450
  39. 320
  40. 130

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