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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 594 · 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. 1.26 × 50 =
  2. 2.58 × 50 =
  3. 3.92 × 50 =
  4. 4.29 × 5 =
  5. 5.33 × 5 =
  6. 6.92 × 5 =
  7. 7.76 × 50 =
  8. 8.14 × 50 =
  9. 9.78 × 50 =
  10. 10.29 × 50 =
  11. 11.95 × 50 =
  12. 12.36 × 5 =
  13. 13.72 × 5 =
  14. 14.43 × 50 =
  15. 15.61 × 50 =
  16. 16.33 × 5 =
  17. 17.23 × 5 =
  18. 18.36 × 50 =
  19. 19.27 × 50 =
  20. 20.48 × 50 =
  21. 21.20 × 50 =
  22. 22.91 × 5 =
  23. 23.84 × 50 =
  24. 24.41 × 5 =
  25. 25.64 × 5 =
  26. 26.22 × 50 =
  27. 27.46 × 50 =
  28. 28.82 × 50 =
  29. 29.39 × 50 =
  30. 30.96 × 50 =
  31. 31.80 × 50 =
  32. 32.68 × 5 =
  33. 33.54 × 50 =
  34. 34.90 × 5 =
  35. 35.14 × 5 =
  36. 36.61 × 50 =
  37. 37.32 × 50 =
  38. 38.65 × 50 =
  39. 39.22 × 5 =
  40. 40.98 × 5 =

Answer key

  1. 1300
  2. 2900
  3. 4600
  4. 145
  5. 165
  6. 460
  7. 3800
  8. 700
  9. 3900
  10. 1450
  11. 4750
  12. 180
  13. 360
  14. 2150
  15. 3050
  16. 165
  17. 115
  18. 1800
  19. 1350
  20. 2400
  21. 1000
  22. 455
  23. 4200
  24. 205
  25. 320
  26. 1100
  27. 2300
  28. 4100
  29. 1950
  30. 4800
  31. 4000
  32. 340
  33. 2700
  34. 450
  35. 70
  36. 3050
  37. 1600
  38. 3250
  39. 110
  40. 490

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