Rename Before You Subtract

Rename Before You Subtract Mrs. Young EMC 1

Subtract the fractions 6 - 1 4 7

Step 1: ,[object Object],6 = 5 + 7 7 6 = 5 + 1 6 = 5 7 7

Step 1 continued… ,[object Object],6 - 1 4 7 = = 1 4 7 5 7 7

Step 2: ,[object Object],1 4 7 5 7 7 - 3 7

Step 3: ,[object Object],1 4 7 5 7 7 - 3 7 4

Step 4: ,[object Object],[object Object],3 7 4

Subtract the fractions 5 - 1 5 6 1 6

Step 1: ,[object Object],5 1 6 = 4 + 1 6 5 = 5 = 4 6 6 1 6 + 1 + + 1 6 + = 4 7 6

Step 1 continued ,[object Object],5 - 2 5 6 = = 2 5 6 4 7 6 1 6

Step 4: ,[object Object],2 6 2 In order to simplify the fraction, you must find the GCF of the numerator and the denominator. Remember to list all of the factors: 2: 1, 2 6: 1, 2, 2, 6 GCF = 2 = ÷ ÷ 2 2 1 3 2

First things first! ,[object Object],6 - 2 2 3 1 5 1 5 - x 3 x 3 2 3 x 5 x 5 = 3 15 - 10 15

Our new problem is: 6 - 2 10 15 3 15

Step 1: ,[object Object],[object Object],6 3 15 = 5 + 3 15 6 = 6 = 5 15 15 3 15 + 1 + + 3 15 + = 5 18 15 3 15

Step 1 continued… ,[object Object],6 - 2 10 15 = = 2 10 15 5 18 15 15 3

Step 4: ,[object Object],[object Object],8 15 3

First things first! ,[object Object],4 - 2 2 3 1 6 1 6 - x 1 x 1 2 3 x 2 x 2 = 1 6 - 4 6

Our new problem is: 4 - 2 4 6 1 6

Step 1: ,[object Object],4 1 6 = 3 + 1 6 4 = 4 = 3 6 6 1 6 + 1 + + 1 6 + = 3 7 6 1 6

Step 1 continued… ,[object Object],4 - 2 2 3 = = 2 4 6 3 7 6 6 1

Step 4: ,[object Object],3 6 1 = ÷ ÷ 3 3 1 2 1 In order to simplify the fraction, you must find the GCF of the numerator and the denominator. Remember to list all of the factors: 1: 1, 3 6: 1, 2, 2, 6 GCF = 3

Your turn! ,[object Object],8 - 2 5 6 2 6

Try another! ,[object Object],4 - 3 1 5 1 8

Rename Before You Subtract

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