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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 772 · 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. 1.47 × 50 =
  2. 2.26 × 50 =
  3. 3.90 × 50 =
  4. 4.75 × 5 =
  5. 5.58 × 50 =
  6. 6.16 × 50 =
  7. 7.51 × 50 =
  8. 8.86 × 5 =
  9. 9.12 × 5 =
  10. 10.43 × 50 =
  11. 11.33 × 5 =
  12. 12.29 × 50 =
  13. 13.26 × 50 =
  14. 14.90 × 5 =
  15. 15.63 × 50 =
  16. 16.53 × 50 =
  17. 17.17 × 50 =
  18. 18.12 × 50 =
  19. 19.28 × 5 =
  20. 20.18 × 50 =
  21. 21.72 × 5 =
  22. 22.96 × 5 =
  23. 23.50 × 50 =
  24. 24.98 × 5 =
  25. 25.58 × 5 =
  26. 26.77 × 50 =
  27. 27.84 × 50 =
  28. 28.26 × 5 =
  29. 29.89 × 5 =
  30. 30.50 × 5 =
  31. 31.34 × 5 =
  32. 32.52 × 5 =
  33. 33.97 × 5 =
  34. 34.15 × 5 =
  35. 35.82 × 50 =
  36. 36.59 × 50 =
  37. 37.34 × 5 =
  38. 38.79 × 50 =
  39. 39.55 × 50 =
  40. 40.96 × 50 =

Answer key

  1. 2350
  2. 1300
  3. 4500
  4. 375
  5. 2900
  6. 800
  7. 2550
  8. 430
  9. 60
  10. 2150
  11. 165
  12. 1450
  13. 1300
  14. 450
  15. 3150
  16. 2650
  17. 850
  18. 600
  19. 140
  20. 900
  21. 360
  22. 480
  23. 2500
  24. 490
  25. 290
  26. 3850
  27. 4200
  28. 130
  29. 445
  30. 250
  31. 170
  32. 260
  33. 485
  34. 75
  35. 4100
  36. 2950
  37. 170
  38. 3950
  39. 2750
  40. 4800

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