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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 555 · 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. 1.58 × 5 =
  2. 2.47 × 5 =
  3. 3.57 × 50 =
  4. 4.41 × 50 =
  5. 5.96 × 50 =
  6. 6.13 × 50 =
  7. 7.39 × 5 =
  8. 8.50 × 50 =
  9. 9.60 × 50 =
  10. 10.31 × 5 =
  11. 11.67 × 5 =
  12. 12.78 × 5 =
  13. 13.17 × 50 =
  14. 14.12 × 5 =
  15. 15.73 × 50 =
  16. 16.29 × 5 =
  17. 17.46 × 50 =
  18. 18.62 × 50 =
  19. 19.70 × 5 =
  20. 20.18 × 5 =
  21. 21.25 × 50 =
  22. 22.94 × 5 =
  23. 23.87 × 50 =
  24. 24.22 × 5 =
  25. 25.40 × 5 =
  26. 26.79 × 50 =
  27. 27.85 × 5 =
  28. 28.40 × 50 =
  29. 29.13 × 5 =
  30. 30.55 × 50 =
  31. 31.14 × 5 =
  32. 32.57 × 50 =
  33. 33.53 × 50 =
  34. 34.56 × 5 =
  35. 35.27 × 5 =
  36. 36.90 × 50 =
  37. 37.92 × 50 =
  38. 38.39 × 50 =
  39. 39.32 × 5 =
  40. 40.24 × 50 =

Answer key

  1. 290
  2. 235
  3. 2850
  4. 2050
  5. 4800
  6. 650
  7. 195
  8. 2500
  9. 3000
  10. 155
  11. 335
  12. 390
  13. 850
  14. 60
  15. 3650
  16. 145
  17. 2300
  18. 3100
  19. 350
  20. 90
  21. 1250
  22. 470
  23. 4350
  24. 110
  25. 200
  26. 3950
  27. 425
  28. 2000
  29. 65
  30. 2750
  31. 70
  32. 2850
  33. 2650
  34. 280
  35. 135
  36. 4500
  37. 4600
  38. 1950
  39. 160
  40. 1200

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