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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 825 · 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. 2.19 × 50 =
  3. 3.33 × 50 =
  4. 4.77 × 5 =
  5. 5.56 × 5 =
  6. 6.91 × 50 =
  7. 7.12 × 50 =
  8. 8.67 × 50 =
  9. 9.27 × 5 =
  10. 10.41 × 5 =
  11. 11.47 × 50 =
  12. 12.49 × 5 =
  13. 13.54 × 5 =
  14. 14.22 × 50 =
  15. 15.83 × 5 =
  16. 16.24 × 50 =
  17. 17.45 × 50 =
  18. 18.25 × 50 =
  19. 19.85 × 50 =
  20. 20.25 × 5 =
  21. 21.40 × 50 =
  22. 22.23 × 5 =
  23. 23.14 × 5 =
  24. 24.92 × 5 =
  25. 25.42 × 50 =
  26. 26.56 × 50 =
  27. 27.68 × 50 =
  28. 28.46 × 50 =
  29. 29.54 × 50 =
  30. 30.31 × 50 =
  31. 31.84 × 5 =
  32. 32.80 × 50 =
  33. 33.13 × 5 =
  34. 34.25 × 50 =
  35. 35.19 × 50 =
  36. 36.15 × 50 =
  37. 37.30 × 5 =
  38. 38.29 × 5 =
  39. 39.53 × 5 =
  40. 40.90 × 5 =

Answer key

  1. 330
  2. 950
  3. 1650
  4. 385
  5. 280
  6. 4550
  7. 600
  8. 3350
  9. 135
  10. 205
  11. 2350
  12. 245
  13. 270
  14. 1100
  15. 415
  16. 1200
  17. 2250
  18. 1250
  19. 4250
  20. 125
  21. 2000
  22. 115
  23. 70
  24. 460
  25. 2100
  26. 2800
  27. 3400
  28. 2300
  29. 2700
  30. 1550
  31. 420
  32. 4000
  33. 65
  34. 1250
  35. 950
  36. 750
  37. 150
  38. 145
  39. 265
  40. 450

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