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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 517 · 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. 1.53 × 5 =
  2. 2.81 × 50 =
  3. 3.70 × 50 =
  4. 4.58 × 50 =
  5. 5.87 × 5 =
  6. 6.68 × 50 =
  7. 7.76 × 5 =
  8. 8.36 × 5 =
  9. 9.28 × 5 =
  10. 10.14 × 50 =
  11. 11.23 × 5 =
  12. 12.45 × 50 =
  13. 13.39 × 50 =
  14. 14.89 × 50 =
  15. 15.34 × 5 =
  16. 16.83 × 50 =
  17. 17.26 × 5 =
  18. 18.60 × 5 =
  19. 19.14 × 5 =
  20. 20.55 × 5 =
  21. 21.77 × 5 =
  22. 22.42 × 50 =
  23. 23.93 × 50 =
  24. 24.60 × 5 =
  25. 25.27 × 5 =
  26. 26.17 × 5 =
  27. 27.65 × 50 =
  28. 28.50 × 5 =
  29. 29.91 × 50 =
  30. 30.65 × 50 =
  31. 31.51 × 50 =
  32. 32.14 × 50 =
  33. 33.48 × 5 =
  34. 34.36 × 50 =
  35. 35.78 × 50 =
  36. 36.66 × 5 =
  37. 37.86 × 50 =
  38. 38.43 × 5 =
  39. 39.65 × 50 =
  40. 40.76 × 50 =

Answer key

  1. 265
  2. 4050
  3. 3500
  4. 2900
  5. 435
  6. 3400
  7. 380
  8. 180
  9. 140
  10. 700
  11. 115
  12. 2250
  13. 1950
  14. 4450
  15. 170
  16. 4150
  17. 130
  18. 300
  19. 70
  20. 275
  21. 385
  22. 2100
  23. 4650
  24. 300
  25. 135
  26. 85
  27. 3250
  28. 250
  29. 4550
  30. 3250
  31. 2550
  32. 700
  33. 240
  34. 1800
  35. 3900
  36. 330
  37. 4300
  38. 215
  39. 3250
  40. 3800

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