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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 376 · 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. 1.35 × 5 =
  2. 2.75 × 50 =
  3. 3.70 × 5 =
  4. 4.73 × 50 =
  5. 5.69 × 50 =
  6. 6.27 × 50 =
  7. 7.73 × 5 =
  8. 8.32 × 5 =
  9. 9.12 × 50 =
  10. 10.47 × 5 =
  11. 11.20 × 5 =
  12. 12.36 × 50 =
  13. 13.48 × 50 =
  14. 14.39 × 5 =
  15. 15.75 × 5 =
  16. 16.83 × 50 =
  17. 17.35 × 50 =
  18. 18.45 × 5 =
  19. 19.32 × 5 =
  20. 20.85 × 50 =
  21. 21.84 × 5 =
  22. 22.57 × 5 =
  23. 23.46 × 50 =
  24. 24.90 × 50 =
  25. 25.65 × 50 =
  26. 26.79 × 50 =
  27. 27.21 × 5 =
  28. 28.26 × 50 =
  29. 29.49 × 50 =
  30. 30.90 × 5 =
  31. 31.34 × 5 =
  32. 32.20 × 5 =
  33. 33.65 × 5 =
  34. 34.16 × 50 =
  35. 35.56 × 5 =
  36. 36.68 × 5 =
  37. 37.85 × 50 =
  38. 38.42 × 5 =
  39. 39.46 × 50 =
  40. 40.88 × 50 =

Answer key

  1. 175
  2. 3750
  3. 350
  4. 3650
  5. 3450
  6. 1350
  7. 365
  8. 160
  9. 600
  10. 235
  11. 100
  12. 1800
  13. 2400
  14. 195
  15. 375
  16. 4150
  17. 1750
  18. 225
  19. 160
  20. 4250
  21. 420
  22. 285
  23. 2300
  24. 4500
  25. 3250
  26. 3950
  27. 105
  28. 1300
  29. 2450
  30. 450
  31. 170
  32. 100
  33. 325
  34. 800
  35. 280
  36. 340
  37. 4250
  38. 210
  39. 2300
  40. 4400

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