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.

TH
Answered by Tom H. Maths tutor

2162 Views

See similar Maths KS3 tutors

Related Maths KS3 answers

All answers ▸

Solve the following algebraic equation: x^2 + 6x + 9 = 0


If x=3 and y=7, which of the following gives value of 23?


Solve the simultaneous equations below: 6x + 12y = 60, x + 6y = 20


simplify the following equation: 3a x 4ab


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning