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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 212 · 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. 1.25 × 5 =
  2. 2.60 × 5 =
  3. 3.31 × 50 =
  4. 4.94 × 5 =
  5. 5.52 × 5 =
  6. 6.70 × 50 =
  7. 7.36 × 5 =
  8. 8.81 × 5 =
  9. 9.64 × 50 =
  10. 10.13 × 5 =
  11. 11.33 × 5 =
  12. 12.51 × 5 =
  13. 13.75 × 50 =
  14. 14.98 × 50 =
  15. 15.26 × 50 =
  16. 16.31 × 5 =
  17. 17.17 × 5 =
  18. 18.47 × 5 =
  19. 19.17 × 5 =
  20. 20.57 × 5 =
  21. 21.98 × 5 =
  22. 22.98 × 50 =
  23. 23.25 × 5 =
  24. 24.43 × 50 =
  25. 25.39 × 5 =
  26. 26.81 × 50 =
  27. 27.35 × 5 =
  28. 28.70 × 5 =
  29. 29.72 × 50 =
  30. 30.26 × 5 =
  31. 31.54 × 5 =
  32. 32.65 × 50 =
  33. 33.13 × 5 =
  34. 34.26 × 5 =
  35. 35.19 × 50 =
  36. 36.23 × 50 =
  37. 37.80 × 50 =
  38. 38.52 × 50 =
  39. 39.34 × 50 =
  40. 40.29 × 50 =

Answer key

  1. 125
  2. 300
  3. 1550
  4. 470
  5. 260
  6. 3500
  7. 180
  8. 405
  9. 3200
  10. 65
  11. 165
  12. 255
  13. 3750
  14. 4900
  15. 1300
  16. 155
  17. 85
  18. 235
  19. 85
  20. 285
  21. 490
  22. 4900
  23. 125
  24. 2150
  25. 195
  26. 4050
  27. 175
  28. 350
  29. 3600
  30. 130
  31. 270
  32. 3250
  33. 65
  34. 130
  35. 950
  36. 1150
  37. 4000
  38. 2600
  39. 1700
  40. 1450

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