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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 325 · 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. 1.49 × 50 =
  2. 2.21 × 5 =
  3. 3.66 × 5 =
  4. 4.90 × 50 =
  5. 5.76 × 5 =
  6. 6.96 × 5 =
  7. 7.32 × 50 =
  8. 8.30 × 50 =
  9. 9.42 × 50 =
  10. 10.87 × 50 =
  11. 11.40 × 50 =
  12. 12.16 × 50 =
  13. 13.19 × 50 =
  14. 14.16 × 50 =
  15. 15.41 × 50 =
  16. 16.35 × 50 =
  17. 17.30 × 50 =
  18. 18.22 × 5 =
  19. 19.46 × 50 =
  20. 20.69 × 50 =
  21. 21.64 × 5 =
  22. 22.95 × 50 =
  23. 23.94 × 50 =
  24. 24.64 × 5 =
  25. 25.86 × 50 =
  26. 26.27 × 5 =
  27. 27.62 × 5 =
  28. 28.28 × 50 =
  29. 29.13 × 50 =
  30. 30.22 × 50 =
  31. 31.83 × 50 =
  32. 32.56 × 50 =
  33. 33.69 × 5 =
  34. 34.88 × 5 =
  35. 35.67 × 5 =
  36. 36.56 × 5 =
  37. 37.40 × 50 =
  38. 38.14 × 50 =
  39. 39.28 × 50 =
  40. 40.42 × 50 =

Answer key

  1. 2450
  2. 105
  3. 330
  4. 4500
  5. 380
  6. 480
  7. 1600
  8. 1500
  9. 2100
  10. 4350
  11. 2000
  12. 800
  13. 950
  14. 800
  15. 2050
  16. 1750
  17. 1500
  18. 110
  19. 2300
  20. 3450
  21. 320
  22. 4750
  23. 4700
  24. 320
  25. 4300
  26. 135
  27. 310
  28. 1400
  29. 650
  30. 1100
  31. 4150
  32. 2800
  33. 345
  34. 440
  35. 335
  36. 280
  37. 2000
  38. 700
  39. 1400
  40. 2100

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