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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 306 · 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. 1.88 × 5 =
  2. 2.26 × 5 =
  3. 3.25 × 5 =
  4. 4.21 × 50 =
  5. 5.72 × 50 =
  6. 6.19 × 5 =
  7. 7.43 × 5 =
  8. 8.56 × 50 =
  9. 9.29 × 5 =
  10. 10.14 × 50 =
  11. 11.89 × 5 =
  12. 12.89 × 50 =
  13. 13.23 × 5 =
  14. 14.46 × 5 =
  15. 15.49 × 50 =
  16. 16.12 × 50 =
  17. 17.69 × 5 =
  18. 18.42 × 5 =
  19. 19.88 × 5 =
  20. 20.26 × 50 =
  21. 21.62 × 5 =
  22. 22.34 × 5 =
  23. 23.17 × 50 =
  24. 24.56 × 5 =
  25. 25.29 × 5 =
  26. 26.49 × 5 =
  27. 27.36 × 5 =
  28. 28.37 × 50 =
  29. 29.93 × 5 =
  30. 30.52 × 5 =
  31. 31.15 × 50 =
  32. 32.76 × 50 =
  33. 33.33 × 5 =
  34. 34.31 × 50 =
  35. 35.83 × 50 =
  36. 36.53 × 50 =
  37. 37.14 × 5 =
  38. 38.81 × 50 =
  39. 39.62 × 5 =
  40. 40.14 × 50 =

Answer key

  1. 440
  2. 130
  3. 125
  4. 1050
  5. 3600
  6. 95
  7. 215
  8. 2800
  9. 145
  10. 700
  11. 445
  12. 4450
  13. 115
  14. 230
  15. 2450
  16. 600
  17. 345
  18. 210
  19. 440
  20. 1300
  21. 310
  22. 170
  23. 850
  24. 280
  25. 145
  26. 245
  27. 180
  28. 1850
  29. 465
  30. 260
  31. 750
  32. 3800
  33. 165
  34. 1550
  35. 4150
  36. 2650
  37. 70
  38. 4050
  39. 310
  40. 700

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