High School Maths Examples and Questions

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Answers − Adding Fractions

When the denominator is the same

1.  2/5 + 2/5 = 4/5

2.  1/6 + 2/6 = 3/6 = 1/2

3.  4/7 + 2/7 = 6/7

4.  3/8 + 3/8 = 6/8 = 3/4

5.  4/9 + 4/9 = 8/9

6.  4/5 + 2/5 = 6/5 = 1 1/5

7.  4/6 + 2/6 = 6/6 = 1

8.  8/7 + 9/7 = 17/7 = 2 3/7

9.  14/8 + 12/8 = 26/8 = 13/4 = 3 1/4

10.  1 2/5 + 2/5 =

(a) Convert the mixed numbers to top heavy fractions
1 2/5 + 2/5 = 7/5 + 2/5
(b) Add the top heavy fractions
7/5 + 2/5 = 9/5 = 1 4/5

11.  2 1/6 + 1 2/6 =

(a) Convert the mixed numbers to top heavy fractions
2 1/6 + 1 2/6 = 13/6 + 8/6
(b) Add the top heavy fractions and then simplify
13/6 + 8/6 = 21/6 = 3 3/6 = 3 1/2

12.  1 4/7 + 1 2/7 =

(a) Convert the mixed numbers to top heavy fractions
1 4/7 + 1 2/7 = 11/7 + 9/7
(b) Add the top heavy fractions
11/7 + 9/7 = 20/7 = 2 6/7

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