What is a common factor?
A factor is a number that can be multiplied into another number with nothing left over. The factors of 9 are 1, 3, 9.A common factor is a number that is a factor of two different numbers. The factors of 9 are 1,3, 9 and the factors of 12 are 1, 2, 3, 4, 6, 12. The common factors are the numbers that appear in both lists. so here, the common factors are 1 and 3.
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Related Maths KS3 answers
All answers ▸A restaurant can be hired out for children's parties, and the cost is shown by the formula "Cost = (£13.50 x number of children) + £23". What is the cost for 8 children?
(x+3)(x+2)
Why do you put the quadratic equation equal to zero when you want to find it’s roots?
Solve for x when x2+16x+28=0