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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 277 · 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. 1.69 × 50 =
  2. 2.27 × 5 =
  3. 3.16 × 50 =
  4. 4.67 × 50 =
  5. 5.28 × 50 =
  6. 6.84 × 50 =
  7. 7.51 × 5 =
  8. 8.74 × 5 =
  9. 9.81 × 5 =
  10. 10.23 × 5 =
  11. 11.74 × 5 =
  12. 12.37 × 5 =
  13. 13.51 × 50 =
  14. 14.70 × 50 =
  15. 15.68 × 50 =
  16. 16.18 × 5 =
  17. 17.82 × 50 =
  18. 18.76 × 50 =
  19. 19.31 × 5 =
  20. 20.89 × 5 =
  21. 21.47 × 5 =
  22. 22.56 × 5 =
  23. 23.19 × 5 =
  24. 24.17 × 5 =
  25. 25.22 × 5 =
  26. 26.61 × 5 =
  27. 27.98 × 50 =
  28. 28.26 × 5 =
  29. 29.70 × 5 =
  30. 30.31 × 5 =
  31. 31.17 × 50 =
  32. 32.31 × 50 =
  33. 33.66 × 5 =
  34. 34.47 × 5 =
  35. 35.27 × 5 =
  36. 36.27 × 50 =
  37. 37.24 × 5 =
  38. 38.44 × 5 =
  39. 39.98 × 5 =
  40. 40.29 × 50 =

Answer key

  1. 3450
  2. 135
  3. 800
  4. 3350
  5. 1400
  6. 4200
  7. 255
  8. 370
  9. 405
  10. 115
  11. 370
  12. 185
  13. 2550
  14. 3500
  15. 3400
  16. 90
  17. 4100
  18. 3800
  19. 155
  20. 445
  21. 235
  22. 280
  23. 95
  24. 85
  25. 110
  26. 305
  27. 4900
  28. 130
  29. 350
  30. 155
  31. 850
  32. 1550
  33. 330
  34. 235
  35. 135
  36. 1350
  37. 120
  38. 220
  39. 490
  40. 1450

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