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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 60 · 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. 1.76 × 50 =
  2. 2.42 × 5 =
  3. 3.23 × 5 =
  4. 4.20 × 50 =
  5. 5.44 × 50 =
  6. 6.38 × 50 =
  7. 7.23 × 50 =
  8. 8.15 × 50 =
  9. 9.35 × 5 =
  10. 10.17 × 50 =
  11. 11.12 × 50 =
  12. 12.27 × 5 =
  13. 13.14 × 50 =
  14. 14.96 × 50 =
  15. 15.15 × 50 =
  16. 16.13 × 5 =
  17. 17.75 × 50 =
  18. 18.98 × 5 =
  19. 19.26 × 50 =
  20. 20.83 × 50 =
  21. 21.42 × 50 =
  22. 22.93 × 5 =
  23. 23.17 × 50 =
  24. 24.35 × 5 =
  25. 25.16 × 50 =
  26. 26.86 × 5 =
  27. 27.70 × 5 =
  28. 28.39 × 5 =
  29. 29.19 × 5 =
  30. 30.80 × 5 =
  31. 31.35 × 5 =
  32. 32.48 × 50 =
  33. 33.16 × 50 =
  34. 34.72 × 5 =
  35. 35.98 × 50 =
  36. 36.25 × 50 =
  37. 37.29 × 50 =
  38. 38.32 × 5 =
  39. 39.31 × 5 =
  40. 40.17 × 5 =

Answer key

  1. 3800
  2. 210
  3. 115
  4. 1000
  5. 2200
  6. 1900
  7. 1150
  8. 750
  9. 175
  10. 850
  11. 600
  12. 135
  13. 700
  14. 4800
  15. 750
  16. 65
  17. 3750
  18. 490
  19. 1300
  20. 4150
  21. 2100
  22. 465
  23. 850
  24. 175
  25. 800
  26. 430
  27. 350
  28. 195
  29. 95
  30. 400
  31. 175
  32. 2400
  33. 800
  34. 360
  35. 4900
  36. 1250
  37. 1450
  38. 160
  39. 155
  40. 85

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