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Fractions: Finding Lowest Terms

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Demonstration of cancelling down a fraction to its lowest terms. Single step examples using the 3 and 7 times table. How to cancel fractions with larger numbers in several steps. How to use the prime …

Demonstration of cancelling down a fraction to its lowest terms. Single step examples using the 3 and 7 times table. How to cancel fractions with larger numbers in several steps. How to use the prime factors of the numerator and denominator to cancel large fractions.

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Transcript

• 1. Cancelling down to lowest terms
• 2.
• 3.
• 4.
• 5. Larger number
• 6.
• 7.
• 8.
• 9. Work in stages
• 10.
• 11.
• 12.
• 13.
• 14.
• 15.
• 16. Another example
• 17.
• 18.
• 19.
• 20.
• 21.
• 22.
• 23.
• 24.
• 25. Link with prime factors
• 26. 612
• 27. 612 2
• 28. 612 2 306
• 29. 612 2 306 2
• 30. 612 2 306 153 2
• 31. 612 2 306 153 2 3
• 32. 612 2 306 153 51 2 3
• 33. 612 2 306 3 153 51 2 3
• 34. 612 2 306 3 153 17 51 2 3
• 35. 612 2 306 3 153 17 51 2 3
• 36. 1638
• 37. 1638 2
• 38. 1638 2 819
• 39. 1638 2 3 819
• 40. 1638 2 3 819 273
• 41. 1638 2 3 3 819 273
• 42. 1638 2 3 3 819 273 91
• 43. 1638 2 3 3 819 273 91 7
• 44. 1638 2 3 3 819 273 91 7 13
• 45. 1638 2 3 3 819 273 91 7 13
• 46.
• 47. 1 1
• 48. 1 1 1 1
• 49. 1 1 1 1 1 1
• 50.