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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 754 · 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. 1.93 × 5 =
  2. 2.67 × 50 =
  3. 3.17 × 50 =
  4. 4.34 × 50 =
  5. 5.28 × 5 =
  6. 6.67 × 5 =
  7. 7.51 × 5 =
  8. 8.90 × 50 =
  9. 9.37 × 5 =
  10. 10.97 × 50 =
  11. 11.12 × 5 =
  12. 12.68 × 50 =
  13. 13.36 × 50 =
  14. 14.84 × 50 =
  15. 15.87 × 5 =
  16. 16.23 × 5 =
  17. 17.42 × 50 =
  18. 18.39 × 5 =
  19. 19.26 × 5 =
  20. 20.83 × 50 =
  21. 21.21 × 50 =
  22. 22.86 × 5 =
  23. 23.33 × 50 =
  24. 24.66 × 5 =
  25. 25.46 × 50 =
  26. 26.52 × 50 =
  27. 27.39 × 5 =
  28. 28.61 × 50 =
  29. 29.94 × 50 =
  30. 30.40 × 5 =
  31. 31.23 × 50 =
  32. 32.42 × 5 =
  33. 33.74 × 50 =
  34. 34.25 × 50 =
  35. 35.56 × 5 =
  36. 36.84 × 5 =
  37. 37.20 × 50 =
  38. 38.30 × 50 =
  39. 39.17 × 50 =
  40. 40.19 × 5 =

Answer key

  1. 465
  2. 3350
  3. 850
  4. 1700
  5. 140
  6. 335
  7. 255
  8. 4500
  9. 185
  10. 4850
  11. 60
  12. 3400
  13. 1800
  14. 4200
  15. 435
  16. 115
  17. 2100
  18. 195
  19. 130
  20. 4150
  21. 1050
  22. 430
  23. 1650
  24. 330
  25. 2300
  26. 2600
  27. 195
  28. 3050
  29. 4700
  30. 200
  31. 1150
  32. 210
  33. 3700
  34. 1250
  35. 280
  36. 420
  37. 1000
  38. 1500
  39. 850
  40. 95

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