Like Denominators
Unlike Denominators
Mixed Numbers
Borrowing Method
100
Simplify 5/12 - 3/12
1/6
100
Simplify 4/5 + 1/6.
29/30
100
Simplify 2 7/8 + 3 5/12
6 7/24
100
Simplify 3 3/5 - 1 2/3
1 14/15
200
Simplify 5/7 + 1
1 5/7
200
Simplify 11/12 - 4/5.
7/60
200
Simplify 5 4/5 - 3 3/10
2 1/2
200
Simplify 4 1/4 - 2 3/7
1 23/28
300
Grandma needs 5/6 inches of blue yarn to finish knitting her sweater. If she found 1/6 inches, how much does she still need to buy? Write a numerical expression and simply.
5/6 - 1/6 = 4/6 = 2/3 inches
300
Simon's I-pod playlist is 1/4 rock and 2/7 rap. How much of Simon's playlist is rock and rap.
15/28 songs
300
An oxygen tank contained 27 2/3 liters of oxygen before 20 3/8 liters were used. How much oxygen is now in the tank?
7 7/24 liters
300
Tommy mows her neighbor's lawn in 1 3/4 hours less than it takes to mow his own lawn. He mows his lawn in 2 8/15 hours. How long does it take to mow his neighbor's lawn?
47/60 hours
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