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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 44 · 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. 1.65 × 5 =
  2. 2.86 × 5 =
  3. 3.26 × 50 =
  4. 4.18 × 5 =
  5. 5.37 × 5 =
  6. 6.13 × 50 =
  7. 7.83 × 5 =
  8. 8.92 × 50 =
  9. 9.45 × 50 =
  10. 10.86 × 5 =
  11. 11.53 × 50 =
  12. 12.49 × 5 =
  13. 13.69 × 50 =
  14. 14.35 × 5 =
  15. 15.34 × 5 =
  16. 16.54 × 50 =
  17. 17.59 × 50 =
  18. 18.76 × 50 =
  19. 19.64 × 5 =
  20. 20.16 × 50 =
  21. 21.94 × 50 =
  22. 22.29 × 5 =
  23. 23.37 × 5 =
  24. 24.25 × 50 =
  25. 25.96 × 50 =
  26. 26.34 × 5 =
  27. 27.36 × 5 =
  28. 28.64 × 5 =
  29. 29.32 × 50 =
  30. 30.37 × 50 =
  31. 31.87 × 50 =
  32. 32.35 × 5 =
  33. 33.15 × 50 =
  34. 34.41 × 5 =
  35. 35.30 × 5 =
  36. 36.38 × 5 =
  37. 37.29 × 5 =
  38. 38.25 × 5 =
  39. 39.32 × 5 =
  40. 40.30 × 50 =

Answer key

  1. 325
  2. 430
  3. 1300
  4. 90
  5. 185
  6. 650
  7. 415
  8. 4600
  9. 2250
  10. 430
  11. 2650
  12. 245
  13. 3450
  14. 175
  15. 170
  16. 2700
  17. 2950
  18. 3800
  19. 320
  20. 800
  21. 4700
  22. 145
  23. 185
  24. 1250
  25. 4800
  26. 170
  27. 180
  28. 320
  29. 1600
  30. 1850
  31. 4350
  32. 175
  33. 750
  34. 205
  35. 150
  36. 190
  37. 145
  38. 125
  39. 160
  40. 1500

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