Directions:Find the common factors of the following using divisibility rule of 2,5,10 by listing method.Show your process.
Example: 6 and 20 (6=1,2,3,6)
(20=1,2,4,5,10,20) common factor is 2
1.
) 54 and 30
CF =
2.
) 18 and 36
CF =
3.
) 50 and 80
CF =
4.
90 and 45
CF =
5.) 70 and 130
CF =
Example: 6 and 20 (6=1,2,3,6)
(20=1,2,4,5,10,20) common factor is 2
1.
) 54 and 30
CF =
2.
) 18 and 36
CF =
3.
) 50 and 80
CF =
4.
90 and 45
CF =
5.) 70 and 130
CF =
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