Find the sum and simplify your answer.

55
7
+
21
4
A.
327
28
B.
727
28
C.
37
11
D.
47
11
That's Correct!
It's Wrong!
5 5
7
+
2 1
4

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

Add the whole parts.

5 + 2 = 7

Now, add the fraction parts.

5
7
+
1
4

Let’s find the least common multiple of 7 and 4.

Least common multiple of 7 and 4 is 28.

So, least common denominator = 28

Now, rewrite both the fractions with denominator 28 .

5
7
×
4
4
=
20
28
1
4
×
7
7
=
7
28

Now, add:

5
7
+
1
4
=
20
28
+
7
28
=
20 + 7
  28
=
27
28

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

7
27
28
So, the required sum is
7 27
28
.

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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