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5 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Finding gcf? |
Find prime factorizations of 2 #s What's highest power of each factor they have in common? Multiply these. 360 & 800 360 = 6*6*10 = 2^3*3^2*5 800 = 8*10*10 = 2^5*5^2 Gcf= 2^3*5 = 8*5= 40 |
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What is gcf of 720 & 1200? |
720= 9*8*10 = 3^2*2^4*5 1200= 3*4*10*10 = 3*2^4*5^2 Gcf= 2^4*3*5=240 |
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Lcm? |
Find two prime factorizations & gcf Write each # as gcf x another factor Lcm is product of 3 numbers used |
24 = 2^3*3 32=2^5 Gcf=8 24= 8*3 32=8*4 8*3*4= 96= lcm |
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Find the lcm? |
Of 18 and 24, do prime factorizations and identify gcf. Then use all factors of one # and non gcf factors of the other # |
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Lcm formula |
Lcm = Mu1 x Mu2 /gcf Warning: cancel numbers first before multiplying!!! |
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