Find the sum and simplify your answer.

21
4
+
21
3
A.
37
12
B.
47
11
C.
37
11
D.
47
12
That's Correct!
It's Wrong!
2 1
4
+
2 1
3

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

Add the whole parts.

2 + 2 = 4

Now, add the fraction parts.

1
4
+
1
3

Let’s find the least common multiple of 4 and 3.

Least common multiple of 4 and 3 is 12.

So, least common denominator = 12

Now, rewrite both the fractions with denominator 12.

1
4
×
3
3
=
3
12
1
3
×
4
4
=
4
12

Now, add:

1
4
+
1
3
=
3
12
+
4
12
=
3 + 4
  12
=
7
12

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

4
7
12
So, the required sum is
4  7
12
.

You May Like

science-quizzes

Earth & Its Resources

Grades 1 to 5

Earth & Its Resources

start
math-quizzes

Geometric Shapes

Grades 1 to 5

Geometric Shapes

start
math-quizzes

Mixed Operations

Grade 1, 2, 4, 5

Mixed Operations

start
math-quizzes

Addition

Grade 1, 2, 3

Addition

start
language-arts-quizzes

Antonyms Synonyms

Grade 3, 4

Antonyms Synonyms

start
language-arts-quizzes

Capitalization

Grade 1, 2, 3

Capitalization

start
math-quizzes

Multiplication

Grade 3, 4, 5

Multiplication

start
math-quizzes

Geometry

Grades 1 to 5

Geometry

start

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