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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 994 · 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. 1.88 × 50 =
  2. 2.27 × 5 =
  3. 3.49 × 5 =
  4. 4.50 × 50 =
  5. 5.90 × 5 =
  6. 6.68 × 5 =
  7. 7.26 × 5 =
  8. 8.43 × 5 =
  9. 9.22 × 50 =
  10. 10.32 × 5 =
  11. 11.44 × 5 =
  12. 12.38 × 5 =
  13. 13.26 × 50 =
  14. 14.18 × 50 =
  15. 15.36 × 50 =
  16. 16.89 × 5 =
  17. 17.58 × 50 =
  18. 18.34 × 5 =
  19. 19.20 × 50 =
  20. 20.53 × 50 =
  21. 21.71 × 50 =
  22. 22.40 × 50 =
  23. 23.14 × 5 =
  24. 24.58 × 5 =
  25. 25.43 × 5 =
  26. 26.96 × 5 =
  27. 27.26 × 50 =
  28. 28.28 × 5 =
  29. 29.61 × 5 =
  30. 30.50 × 50 =
  31. 31.23 × 5 =
  32. 32.60 × 5 =
  33. 33.39 × 5 =
  34. 34.54 × 5 =
  35. 35.67 × 5 =
  36. 36.15 × 50 =
  37. 37.78 × 50 =
  38. 38.39 × 5 =
  39. 39.79 × 5 =
  40. 40.78 × 5 =

Answer key

  1. 4400
  2. 135
  3. 245
  4. 2500
  5. 450
  6. 340
  7. 130
  8. 215
  9. 1100
  10. 160
  11. 220
  12. 190
  13. 1300
  14. 900
  15. 1800
  16. 445
  17. 2900
  18. 170
  19. 1000
  20. 2650
  21. 3550
  22. 2000
  23. 70
  24. 290
  25. 215
  26. 480
  27. 1300
  28. 140
  29. 305
  30. 2500
  31. 115
  32. 300
  33. 195
  34. 270
  35. 335
  36. 750
  37. 3900
  38. 195
  39. 395
  40. 390

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