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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 769 · 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. 1.13 × 50 =
  2. 2.51 × 5 =
  3. 3.69 × 50 =
  4. 4.61 × 50 =
  5. 5.92 × 50 =
  6. 6.74 × 50 =
  7. 7.46 × 50 =
  8. 8.14 × 50 =
  9. 9.66 × 50 =
  10. 10.84 × 50 =
  11. 11.29 × 5 =
  12. 12.68 × 5 =
  13. 13.77 × 50 =
  14. 14.59 × 50 =
  15. 15.37 × 50 =
  16. 16.63 × 5 =
  17. 17.57 × 5 =
  18. 18.61 × 5 =
  19. 19.70 × 50 =
  20. 20.39 × 50 =
  21. 21.62 × 50 =
  22. 22.29 × 50 =
  23. 23.26 × 5 =
  24. 24.25 × 5 =
  25. 25.31 × 50 =
  26. 26.28 × 5 =
  27. 27.14 × 5 =
  28. 28.67 × 5 =
  29. 29.16 × 50 =
  30. 30.13 × 50 =
  31. 31.82 × 50 =
  32. 32.68 × 5 =
  33. 33.33 × 5 =
  34. 34.93 × 50 =
  35. 35.53 × 5 =
  36. 36.13 × 50 =
  37. 37.64 × 5 =
  38. 38.84 × 5 =
  39. 39.86 × 50 =
  40. 40.69 × 5 =

Answer key

  1. 650
  2. 255
  3. 3450
  4. 3050
  5. 4600
  6. 3700
  7. 2300
  8. 700
  9. 3300
  10. 4200
  11. 145
  12. 340
  13. 3850
  14. 2950
  15. 1850
  16. 315
  17. 285
  18. 305
  19. 3500
  20. 1950
  21. 3100
  22. 1450
  23. 130
  24. 125
  25. 1550
  26. 140
  27. 70
  28. 335
  29. 800
  30. 650
  31. 4100
  32. 340
  33. 165
  34. 4650
  35. 265
  36. 650
  37. 320
  38. 420
  39. 4300
  40. 345

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