My teacher gave me a worksheet and I don't understand this question. 25,75

GFC = Greatest Common Factor (ie: what is the biggest number you can divide both numbers by)

when the two numbers are 25 & 75 what is the biggest number that you can divide both by and get a whole number?

25 goes into 25 1 time. 25 goes into 75 3 times.

so the GCF = 25

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