Addition and Subtraction of Fractions Problems of the day: 2/9 + 4/9 = 1/3 + ¼ =
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Transcript Addition and Subtraction of Fractions Problems of the day: 2/9 + 4/9 = 1/3 + ¼ =
Addition and
Subtraction of
Fractions
Problems of the day: 2/9 + 4/9 =
1/3 + ¼ =
Like denominators
2/9 + 4/9
2 /9 + 4/9 = 2+4/ 9 Keep the
denominators the same. Add the
numerators.
6/9 = 6÷3/9÷3 = 2/3 Simplify.
Different Denominators
4/5 + 2/3
Find a common denominator 15
4/5= 12/15 Get the equivalent
fractions
2/3 = 10/15
12/15 + 10/15 = 22/15
22/15 = 1 7/15
You try it.
Add 3/5 + 1/5
7/8 + 3/8
1/3 + 1/8
¾ + 1/6
4/5 + 1/3
Subtract fractions
2/5 – 1/5 = 1/5 Keep the
denominator. Subtract the numerator.
¾ - 1/3 Get a common denominator
12
Get the equivalent fraction.
¾ = 9/12, 1/3 = 4/12
9/12- 4/12 = 5/12
Homework p. 194 1-33
Good luck with your homework.