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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 752 · 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. 1.93 × 50 =
  2. 2.40 × 50 =
  3. 3.12 × 50 =
  4. 4.84 × 5 =
  5. 5.97 × 5 =
  6. 6.46 × 5 =
  7. 7.29 × 50 =
  8. 8.47 × 5 =
  9. 9.55 × 5 =
  10. 10.19 × 5 =
  11. 11.33 × 5 =
  12. 12.50 × 5 =
  13. 13.82 × 50 =
  14. 14.32 × 5 =
  15. 15.27 × 50 =
  16. 16.29 × 5 =
  17. 17.75 × 50 =
  18. 18.36 × 5 =
  19. 19.69 × 5 =
  20. 20.94 × 50 =
  21. 21.68 × 50 =
  22. 22.27 × 5 =
  23. 23.28 × 50 =
  24. 24.24 × 5 =
  25. 25.88 × 5 =
  26. 26.86 × 50 =
  27. 27.47 × 50 =
  28. 28.20 × 5 =
  29. 29.59 × 5 =
  30. 30.50 × 50 =
  31. 31.12 × 50 =
  32. 32.18 × 50 =
  33. 33.81 × 50 =
  34. 34.63 × 50 =
  35. 35.84 × 50 =
  36. 36.75 × 5 =
  37. 37.13 × 5 =
  38. 38.15 × 5 =
  39. 39.18 × 5 =
  40. 40.84 × 50 =

Answer key

  1. 4650
  2. 2000
  3. 600
  4. 420
  5. 485
  6. 230
  7. 1450
  8. 235
  9. 275
  10. 95
  11. 165
  12. 250
  13. 4100
  14. 160
  15. 1350
  16. 145
  17. 3750
  18. 180
  19. 345
  20. 4700
  21. 3400
  22. 135
  23. 1400
  24. 120
  25. 440
  26. 4300
  27. 2350
  28. 100
  29. 295
  30. 2500
  31. 600
  32. 900
  33. 4050
  34. 3150
  35. 4200
  36. 375
  37. 65
  38. 75
  39. 90
  40. 4200

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