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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 110 · 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. 1.83 × 5 =
  2. 2.77 × 50 =
  3. 3.66 × 5 =
  4. 4.38 × 50 =
  5. 5.14 × 5 =
  6. 6.78 × 5 =
  7. 7.51 × 50 =
  8. 8.33 × 50 =
  9. 9.79 × 5 =
  10. 10.98 × 50 =
  11. 11.48 × 5 =
  12. 12.28 × 5 =
  13. 13.67 × 5 =
  14. 14.77 × 50 =
  15. 15.23 × 5 =
  16. 16.56 × 50 =
  17. 17.49 × 5 =
  18. 18.42 × 50 =
  19. 19.48 × 50 =
  20. 20.84 × 50 =
  21. 21.63 × 50 =
  22. 22.79 × 5 =
  23. 23.76 × 5 =
  24. 24.42 × 5 =
  25. 25.26 × 50 =
  26. 26.94 × 5 =
  27. 27.79 × 50 =
  28. 28.92 × 50 =
  29. 29.80 × 5 =
  30. 30.60 × 50 =
  31. 31.25 × 50 =
  32. 32.68 × 5 =
  33. 33.66 × 50 =
  34. 34.40 × 5 =
  35. 35.37 × 5 =
  36. 36.48 × 50 =
  37. 37.80 × 5 =
  38. 38.19 × 5 =
  39. 39.28 × 50 =
  40. 40.44 × 50 =

Answer key

  1. 415
  2. 3850
  3. 330
  4. 1900
  5. 70
  6. 390
  7. 2550
  8. 1650
  9. 395
  10. 4900
  11. 240
  12. 140
  13. 335
  14. 3850
  15. 115
  16. 2800
  17. 245
  18. 2100
  19. 2400
  20. 4200
  21. 3150
  22. 395
  23. 380
  24. 210
  25. 1300
  26. 470
  27. 3950
  28. 4600
  29. 400
  30. 3000
  31. 1250
  32. 340
  33. 3300
  34. 200
  35. 185
  36. 2400
  37. 400
  38. 95
  39. 1400
  40. 2200

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