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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 876 · 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. 1.80 × 50 =
  2. 2.36 × 5 =
  3. 3.46 × 50 =
  4. 4.26 × 50 =
  5. 5.21 × 50 =
  6. 6.14 × 5 =
  7. 7.29 × 5 =
  8. 8.54 × 5 =
  9. 9.61 × 5 =
  10. 10.26 × 5 =
  11. 11.29 × 50 =
  12. 12.62 × 5 =
  13. 13.84 × 5 =
  14. 14.59 × 5 =
  15. 15.74 × 5 =
  16. 16.34 × 50 =
  17. 17.45 × 50 =
  18. 18.40 × 50 =
  19. 19.71 × 50 =
  20. 20.28 × 5 =
  21. 21.17 × 5 =
  22. 22.66 × 50 =
  23. 23.27 × 50 =
  24. 24.49 × 5 =
  25. 25.70 × 5 =
  26. 26.95 × 5 =
  27. 27.51 × 50 =
  28. 28.36 × 5 =
  29. 29.23 × 50 =
  30. 30.35 × 50 =
  31. 31.96 × 5 =
  32. 32.22 × 50 =
  33. 33.97 × 5 =
  34. 34.70 × 5 =
  35. 35.82 × 50 =
  36. 36.54 × 5 =
  37. 37.68 × 50 =
  38. 38.73 × 5 =
  39. 39.88 × 50 =
  40. 40.76 × 5 =

Answer key

  1. 4000
  2. 180
  3. 2300
  4. 1300
  5. 1050
  6. 70
  7. 145
  8. 270
  9. 305
  10. 130
  11. 1450
  12. 310
  13. 420
  14. 295
  15. 370
  16. 1700
  17. 2250
  18. 2000
  19. 3550
  20. 140
  21. 85
  22. 3300
  23. 1350
  24. 245
  25. 350
  26. 475
  27. 2550
  28. 180
  29. 1150
  30. 1750
  31. 480
  32. 1100
  33. 485
  34. 350
  35. 4100
  36. 270
  37. 3400
  38. 365
  39. 4400
  40. 380

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