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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 676 · 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. 1.33 × 50 =
  2. 2.16 × 50 =
  3. 3.59 × 5 =
  4. 4.27 × 5 =
  5. 5.15 × 50 =
  6. 6.74 × 50 =
  7. 7.54 × 50 =
  8. 8.72 × 5 =
  9. 9.33 × 50 =
  10. 10.59 × 50 =
  11. 11.94 × 50 =
  12. 12.32 × 50 =
  13. 13.44 × 5 =
  14. 14.79 × 50 =
  15. 15.13 × 50 =
  16. 16.40 × 50 =
  17. 17.93 × 5 =
  18. 18.27 × 5 =
  19. 19.52 × 5 =
  20. 20.12 × 5 =
  21. 21.90 × 5 =
  22. 22.55 × 5 =
  23. 23.48 × 5 =
  24. 24.76 × 5 =
  25. 25.28 × 50 =
  26. 26.82 × 5 =
  27. 27.81 × 5 =
  28. 28.43 × 5 =
  29. 29.34 × 5 =
  30. 30.83 × 5 =
  31. 31.27 × 50 =
  32. 32.20 × 5 =
  33. 33.96 × 5 =
  34. 34.75 × 50 =
  35. 35.67 × 5 =
  36. 36.90 × 50 =
  37. 37.85 × 50 =
  38. 38.58 × 50 =
  39. 39.16 × 5 =
  40. 40.82 × 5 =

Answer key

  1. 1650
  2. 800
  3. 295
  4. 135
  5. 750
  6. 3700
  7. 2700
  8. 360
  9. 1650
  10. 2950
  11. 4700
  12. 1600
  13. 220
  14. 3950
  15. 650
  16. 2000
  17. 465
  18. 135
  19. 260
  20. 60
  21. 450
  22. 275
  23. 240
  24. 380
  25. 1400
  26. 410
  27. 405
  28. 215
  29. 170
  30. 415
  31. 1350
  32. 100
  33. 480
  34. 3750
  35. 335
  36. 4500
  37. 4250
  38. 2900
  39. 80
  40. 410

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