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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 154 · 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. 1.17 × 5 =
  2. 2.28 × 5 =
  3. 3.41 × 5 =
  4. 4.90 × 50 =
  5. 5.88 × 5 =
  6. 6.20 × 50 =
  7. 7.14 × 5 =
  8. 8.44 × 50 =
  9. 9.34 × 5 =
  10. 10.85 × 50 =
  11. 11.32 × 50 =
  12. 12.79 × 5 =
  13. 13.83 × 5 =
  14. 14.85 × 5 =
  15. 15.98 × 5 =
  16. 16.80 × 5 =
  17. 17.49 × 5 =
  18. 18.44 × 50 =
  19. 19.29 × 5 =
  20. 20.87 × 5 =
  21. 21.12 × 5 =
  22. 22.19 × 50 =
  23. 23.71 × 5 =
  24. 24.87 × 50 =
  25. 25.63 × 50 =
  26. 26.86 × 5 =
  27. 27.86 × 5 =
  28. 28.48 × 50 =
  29. 29.16 × 50 =
  30. 30.78 × 50 =
  31. 31.17 × 5 =
  32. 32.85 × 5 =
  33. 33.61 × 50 =
  34. 34.19 × 5 =
  35. 35.78 × 5 =
  36. 36.92 × 50 =
  37. 37.55 × 5 =
  38. 38.56 × 50 =
  39. 39.13 × 50 =
  40. 40.65 × 50 =

Answer key

  1. 85
  2. 140
  3. 205
  4. 4500
  5. 440
  6. 1000
  7. 70
  8. 2200
  9. 170
  10. 4250
  11. 1600
  12. 395
  13. 415
  14. 425
  15. 490
  16. 400
  17. 245
  18. 2200
  19. 145
  20. 435
  21. 60
  22. 950
  23. 355
  24. 4350
  25. 3150
  26. 430
  27. 430
  28. 2400
  29. 800
  30. 3900
  31. 85
  32. 425
  33. 3050
  34. 95
  35. 390
  36. 4600
  37. 275
  38. 2800
  39. 650
  40. 3250

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