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Click mouse to continue GROWING A FACTOR TREE Or Or Can think You might Youyou might of that one 180 You might notice notice that 180 FACTOR PAIR we has aa ZERO ZERO in see that 180 hasCan inis forEVEN 180a? its ONES its ONES an grow PLACE which PLACE which NUMBER tree of means it is aa means it is and that be the This should multiple multiple of of 10. 10. means that 2 two numbers factors SO… isthat aSO… factor… multiply ofxx180? 10 • = 10 • =to180 180 together give 2x• =the180 ? Product 10 x 18 =180. 180 Click mouse to continue 180 10 18 Click mouse to continue 180 NOW You have to find FACTOR PAIRS for 10 and 18 10 18 We “grow” this “tree” downwards since that is how we write in English (and we can’t be sure how big it will be - we could run out of paper if we grew upwards). Click mouse to continue 180 Find factors for 10 & 18 18 10 2 x 5 = 10 6 x 3 = 18 2 5 6 3 Click mouse to continue Since 2 and 3 and ARE 5 are PRIME WE NUMBERS they do not DONE grow “new branches”. ???just They grow down alone. 180 18 10 2 5 6 3 Since 6 is NOT a prime number it is a COMPOSITE NUMBER - it still has factors. Since it is an EVEN NUMBER we see that: 6 = 2 x3• 2 5 2 3 3 Click mouse to continue … and if we flip it over we can see why it is called a tree 2 2 5 2 3 3 5 3 6 10 18 180