Fractions Packet - Examples And Worksheets With Answers Page 15
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42Dividing by 12
If the number divides by both 3 and 4, then the number will divide by 12
1224
3
408
1224
Ex.
3612
3612
3
1204
12
1224
And
therefore
divides by
12
3612
1224
4
306
1224
3612
3612
4
903
Dividing by 13
Delete the last digit. Subtract nine times the deleted digit from the
remaining number. If what is left is divisible by thirteen, then the number
divides by thirteen.
Ex.
Forget it! This is too much work!
Remember to try to reduce with any number that makes the reduction simple
and easy for you.
Good Luck!
Fractions Packet
Created by MLC @ 2009 page 15 of 42
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