Subtracting Fractions
4/5 - 1/5
3/5, 15/25, 60/100
4/5 + 1/5
5/5, 1
1/3 of 9
3
John spends 1/2 of an hour eating dinner and then 1/4 of an hour doing his homework. How much time did he spend in all?
3/4, 6/8, 9/12, 45/60, 75/100
2/3
4/6, 6/9, 8/12...
3/4 - 1/2
1/4, 2/8, 3/12, 15/60, 25/100
4/10 + 1/2
90/100, 9/10, 18/20
2/3 of 9
6
Sarah spends 5/6 of an hour on her homework. John spends 1/2 of an hour on his homework. How much more time did Sarah spend than John?
2/6, 20/60, 4/12
What is a common denominator for 8 and 12?
The LEAST Common Denominator is 24
Other common denominators are 48, 96
3/10 + 49/100
52/100, 26/50, 13/25
80/100 - 2/10=
60/100, 6/10, 3/5
1/4 of 36
9
Steve ran 1/3 of a 24 km race and then he started walking. How many km has he ran?
8 km
3/4
1 - 3/8 =
5/8
____ + 7/12 = 1
5/12
3/4 X 16
12
Sam is 5 1/4 ft tall. Jenny is 5 1/2 ft tall. Who is taller? How much taller are they?
Jenny is taller. Jenny is 1/4, 2/8, 25/100, 15/60 taller
What is a common denominator for 5 and 15?
The LEAST Common Denominator is 15
Other common denominators are 30, 45, 60...
1 1/5 - 3/5
3/5
2 3/4 + 1 4/7
3 37/28, 4 9/28
4/5 X 30
24
Kevin is making a cake. He has 1/4 of a cup of sugar, 2/5 of a cup of flour, and 3/20 cups of butter. How much is all of that together?
16/20, 80/100, 32/40, 8/10
8/10
4/5, 12/15, 16/20...