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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 377 · 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. 1.48 × 5 =
  2. 2.36 × 5 =
  3. 3.36 × 50 =
  4. 4.63 × 50 =
  5. 5.51 × 50 =
  6. 6.70 × 50 =
  7. 7.51 × 5 =
  8. 8.41 × 50 =
  9. 9.78 × 5 =
  10. 10.98 × 50 =
  11. 11.63 × 5 =
  12. 12.91 × 50 =
  13. 13.33 × 5 =
  14. 14.40 × 50 =
  15. 15.89 × 50 =
  16. 16.70 × 5 =
  17. 17.64 × 5 =
  18. 18.49 × 5 =
  19. 19.42 × 5 =
  20. 20.17 × 50 =
  21. 21.39 × 50 =
  22. 22.46 × 50 =
  23. 23.37 × 5 =
  24. 24.20 × 50 =
  25. 25.64 × 50 =
  26. 26.53 × 50 =
  27. 27.66 × 5 =
  28. 28.31 × 50 =
  29. 29.69 × 50 =
  30. 30.45 × 50 =
  31. 31.96 × 50 =
  32. 32.78 × 50 =
  33. 33.16 × 5 =
  34. 34.42 × 50 =
  35. 35.17 × 50 =
  36. 36.94 × 5 =
  37. 37.48 × 5 =
  38. 38.39 × 5 =
  39. 39.30 × 50 =
  40. 40.19 × 5 =

Answer key

  1. 240
  2. 180
  3. 1800
  4. 3150
  5. 2550
  6. 3500
  7. 255
  8. 2050
  9. 390
  10. 4900
  11. 315
  12. 4550
  13. 165
  14. 2000
  15. 4450
  16. 350
  17. 320
  18. 245
  19. 210
  20. 850
  21. 1950
  22. 2300
  23. 185
  24. 1000
  25. 3200
  26. 2650
  27. 330
  28. 1550
  29. 3450
  30. 2250
  31. 4800
  32. 3900
  33. 80
  34. 2100
  35. 850
  36. 470
  37. 240
  38. 195
  39. 1500
  40. 95

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