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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 887 · 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. 1.66 × 5 =
  2. 2.12 × 50 =
  3. 3.85 × 50 =
  4. 4.88 × 50 =
  5. 5.16 × 5 =
  6. 6.82 × 50 =
  7. 7.81 × 5 =
  8. 8.91 × 5 =
  9. 9.71 × 5 =
  10. 10.13 × 5 =
  11. 11.29 × 50 =
  12. 12.22 × 50 =
  13. 13.89 × 5 =
  14. 14.47 × 50 =
  15. 15.48 × 50 =
  16. 16.48 × 5 =
  17. 17.19 × 50 =
  18. 18.73 × 5 =
  19. 19.85 × 50 =
  20. 20.43 × 5 =
  21. 21.41 × 50 =
  22. 22.20 × 5 =
  23. 23.18 × 50 =
  24. 24.18 × 50 =
  25. 25.68 × 5 =
  26. 26.31 × 50 =
  27. 27.39 × 50 =
  28. 28.16 × 50 =
  29. 29.21 × 50 =
  30. 30.63 × 50 =
  31. 31.60 × 5 =
  32. 32.65 × 50 =
  33. 33.19 × 50 =
  34. 34.65 × 50 =
  35. 35.35 × 5 =
  36. 36.28 × 50 =
  37. 37.24 × 5 =
  38. 38.14 × 5 =
  39. 39.69 × 5 =
  40. 40.47 × 5 =

Answer key

  1. 330
  2. 600
  3. 4250
  4. 4400
  5. 80
  6. 4100
  7. 405
  8. 455
  9. 355
  10. 65
  11. 1450
  12. 1100
  13. 445
  14. 2350
  15. 2400
  16. 240
  17. 950
  18. 365
  19. 4250
  20. 215
  21. 2050
  22. 100
  23. 900
  24. 900
  25. 340
  26. 1550
  27. 1950
  28. 800
  29. 1050
  30. 3150
  31. 300
  32. 3250
  33. 950
  34. 3250
  35. 175
  36. 1400
  37. 120
  38. 70
  39. 345
  40. 235

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