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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 700 · 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. 1.82 × 5 =
  2. 2.20 × 5 =
  3. 3.44 × 5 =
  4. 4.23 × 5 =
  5. 5.22 × 50 =
  6. 6.45 × 50 =
  7. 7.15 × 50 =
  8. 8.67 × 50 =
  9. 9.82 × 5 =
  10. 10.81 × 5 =
  11. 11.62 × 5 =
  12. 12.55 × 5 =
  13. 13.32 × 50 =
  14. 14.63 × 5 =
  15. 15.37 × 50 =
  16. 16.56 × 5 =
  17. 17.50 × 50 =
  18. 18.30 × 50 =
  19. 19.77 × 5 =
  20. 20.19 × 50 =
  21. 21.57 × 5 =
  22. 22.52 × 50 =
  23. 23.55 × 50 =
  24. 24.18 × 50 =
  25. 25.57 × 5 =
  26. 26.88 × 5 =
  27. 27.41 × 5 =
  28. 28.69 × 5 =
  29. 29.32 × 50 =
  30. 30.56 × 50 =
  31. 31.81 × 5 =
  32. 32.20 × 5 =
  33. 33.57 × 50 =
  34. 34.41 × 5 =
  35. 35.26 × 50 =
  36. 36.21 × 5 =
  37. 37.90 × 5 =
  38. 38.13 × 5 =
  39. 39.43 × 5 =
  40. 40.30 × 50 =

Answer key

  1. 410
  2. 100
  3. 220
  4. 115
  5. 1100
  6. 2250
  7. 750
  8. 3350
  9. 410
  10. 405
  11. 310
  12. 275
  13. 1600
  14. 315
  15. 1850
  16. 280
  17. 2500
  18. 1500
  19. 385
  20. 950
  21. 285
  22. 2600
  23. 2750
  24. 900
  25. 285
  26. 440
  27. 205
  28. 345
  29. 1600
  30. 2800
  31. 405
  32. 100
  33. 2850
  34. 205
  35. 1300
  36. 105
  37. 450
  38. 65
  39. 215
  40. 1500

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