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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 233 · 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. 1.95 × 5 =
  2. 2.94 × 5 =
  3. 3.46 × 50 =
  4. 4.22 × 50 =
  5. 5.72 × 5 =
  6. 6.73 × 50 =
  7. 7.98 × 5 =
  8. 8.32 × 5 =
  9. 9.15 × 5 =
  10. 10.46 × 50 =
  11. 11.27 × 5 =
  12. 12.65 × 5 =
  13. 13.72 × 5 =
  14. 14.38 × 5 =
  15. 15.53 × 50 =
  16. 16.55 × 50 =
  17. 17.66 × 50 =
  18. 18.36 × 5 =
  19. 19.71 × 50 =
  20. 20.56 × 5 =
  21. 21.34 × 5 =
  22. 22.65 × 5 =
  23. 23.38 × 5 =
  24. 24.77 × 50 =
  25. 25.23 × 50 =
  26. 26.44 × 50 =
  27. 27.87 × 50 =
  28. 28.78 × 50 =
  29. 29.32 × 50 =
  30. 30.45 × 50 =
  31. 31.16 × 5 =
  32. 32.98 × 50 =
  33. 33.89 × 50 =
  34. 34.12 × 50 =
  35. 35.23 × 50 =
  36. 36.64 × 5 =
  37. 37.46 × 5 =
  38. 38.42 × 50 =
  39. 39.86 × 50 =
  40. 40.75 × 5 =

Answer key

  1. 475
  2. 470
  3. 2300
  4. 1100
  5. 360
  6. 3650
  7. 490
  8. 160
  9. 75
  10. 2300
  11. 135
  12. 325
  13. 360
  14. 190
  15. 2650
  16. 2750
  17. 3300
  18. 180
  19. 3550
  20. 280
  21. 170
  22. 325
  23. 190
  24. 3850
  25. 1150
  26. 2200
  27. 4350
  28. 3900
  29. 1600
  30. 2250
  31. 80
  32. 4900
  33. 4450
  34. 600
  35. 1150
  36. 320
  37. 230
  38. 2100
  39. 4300
  40. 375

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