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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 437 · 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. 2.90 × 50 =
  3. 3.56 × 50 =
  4. 4.56 × 50 =
  5. 5.46 × 50 =
  6. 6.92 × 5 =
  7. 7.68 × 50 =
  8. 8.81 × 50 =
  9. 9.50 × 5 =
  10. 10.34 × 50 =
  11. 11.57 × 5 =
  12. 12.70 × 50 =
  13. 13.33 × 50 =
  14. 14.34 × 5 =
  15. 15.24 × 5 =
  16. 16.93 × 50 =
  17. 17.57 × 50 =
  18. 18.78 × 50 =
  19. 19.52 × 5 =
  20. 20.87 × 5 =
  21. 21.48 × 50 =
  22. 22.13 × 50 =
  23. 23.61 × 50 =
  24. 24.76 × 5 =
  25. 25.13 × 5 =
  26. 26.74 × 50 =
  27. 27.85 × 5 =
  28. 28.25 × 50 =
  29. 29.13 × 5 =
  30. 30.25 × 5 =
  31. 31.76 × 5 =
  32. 32.65 × 5 =
  33. 33.42 × 50 =
  34. 34.14 × 50 =
  35. 35.97 × 5 =
  36. 36.88 × 5 =
  37. 37.34 × 50 =
  38. 38.30 × 5 =
  39. 39.24 × 5 =
  40. 40.78 × 5 =

Answer key

  1. 650
  2. 4500
  3. 2800
  4. 2800
  5. 2300
  6. 460
  7. 3400
  8. 4050
  9. 250
  10. 1700
  11. 285
  12. 3500
  13. 1650
  14. 170
  15. 120
  16. 4650
  17. 2850
  18. 3900
  19. 260
  20. 435
  21. 2400
  22. 650
  23. 3050
  24. 380
  25. 65
  26. 3700
  27. 425
  28. 1250
  29. 65
  30. 125
  31. 380
  32. 325
  33. 2100
  34. 700
  35. 485
  36. 440
  37. 1700
  38. 150
  39. 120
  40. 390

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