To write the sum of 45 and 36 using GCF and the distributive property, we find the GCF, which is 9. Then we express the two numbers as products of 9 and sum them to get 9 times (5 + 4), resulting in 9 times 9, or 81. Thus, 45 + 36 = 9 ร 9 = 81.
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To write the expression 45 + 36 using the Greatest Common Factor (GCF) and the distributive property, we need to follow these steps:
Find the GCF of 45 and 36:
List the factors of 45: 1 , 3 , 5 , 9 , 15 , 45 .
List the factors of 36: 1 , 2 , 3 , 4 , 6 , 9 , 12 , 18 , 36 .
The greatest common factor is the largest number that appears in both lists, which is 9 .
Rewrite each number as a product of the GCF and another factor:
Divide 45 by 9: 45 รท 9 = 5 , so 45 = 9 ร 5 .
Divide 36 by 9: 36 รท 9 = 4 , so 36 = 9 ร 4 .
Use the distributive property to express the sum of 45 and 36:
The distributive property states that a ( b + c ) = ab + a c . Applying this, we have:
45 + 36 = 9 ร 5 + 9 ร 4 = 9 ( 5 + 4 )
So the expression 45 + 36 written in factored form using the GCF and the distributive property is 9 ( 5 + 4 ) .