Find the sum and simplify your answer.

102
8
+
71
2
A.
172
10
B.
72
3
C.
173
4
D.
195
7
That's Correct!
It's Wrong!
10 2
8
+
7 1
2

To add mixed numbers, we first add the whole number parts together, and then the fraction parts.

Add the whole parts.

10 + 7 = 17

Now, add the fraction parts.

2
8
+
1
2

Let’s find the least common multiple of 8 and 2.

Least common multiple of 8 and 2 is 8.

So, least common denominator = 8

Now, rewrite both the fractions with denominator 8.

2
8
×
1
1
=
2
8
1
2
×
4
4
=
4
8

Now, add:

2
8
+
1
2
=
2
8
+
4
8
=
2 + 4
  8
=
6
8

Now, simplify:

6
8
=
6 ÷ 2
8 ÷ 2
=
3
4

Now, write the sum of whole parts and fraction parts together.

17
3
4
So, the required sum is
17 3
4
.

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Key Data

Questions
10
Grade
5
Theme
Fractions
Passing score
80%

Progress

8 Incorrect
10 Correct
1
2
3
4
5
6
7
8
9
10
Restart