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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 335 · 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. 1.43 × 5 =
  2. 2.53 × 5 =
  3. 3.97 × 5 =
  4. 4.14 × 5 =
  5. 5.35 × 50 =
  6. 6.20 × 50 =
  7. 7.86 × 5 =
  8. 8.93 × 50 =
  9. 9.29 × 5 =
  10. 10.14 × 50 =
  11. 11.97 × 5 =
  12. 12.91 × 5 =
  13. 13.17 × 5 =
  14. 14.67 × 5 =
  15. 15.40 × 50 =
  16. 16.68 × 5 =
  17. 17.45 × 5 =
  18. 18.67 × 5 =
  19. 19.14 × 5 =
  20. 20.45 × 50 =
  21. 21.15 × 5 =
  22. 22.21 × 5 =
  23. 23.15 × 5 =
  24. 24.42 × 5 =
  25. 25.77 × 5 =
  26. 26.38 × 5 =
  27. 27.41 × 5 =
  28. 28.74 × 5 =
  29. 29.54 × 50 =
  30. 30.34 × 5 =
  31. 31.93 × 50 =
  32. 32.35 × 50 =
  33. 33.96 × 50 =
  34. 34.40 × 5 =
  35. 35.84 × 50 =
  36. 36.48 × 50 =
  37. 37.29 × 5 =
  38. 38.35 × 50 =
  39. 39.57 × 50 =
  40. 40.48 × 50 =

Answer key

  1. 215
  2. 265
  3. 485
  4. 70
  5. 1750
  6. 1000
  7. 430
  8. 4650
  9. 145
  10. 700
  11. 485
  12. 455
  13. 85
  14. 335
  15. 2000
  16. 340
  17. 225
  18. 335
  19. 70
  20. 2250
  21. 75
  22. 105
  23. 75
  24. 210
  25. 385
  26. 190
  27. 205
  28. 370
  29. 2700
  30. 170
  31. 4650
  32. 1750
  33. 4800
  34. 200
  35. 4200
  36. 2400
  37. 145
  38. 1750
  39. 2850
  40. 2400

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