Add Mixed Numbers with Unlike Denominators

For Example

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

For example: Let's find the sum of:

5 5
7
+
2 1
4

Add the whole parts.

5 + 2 = 7

Now, add the fraction parts.

5
7
+
1
4

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
.
START QUIZ!

You May Like

math-quizzes

Geometry

Grades 1 to 5

Geometry

start
language-arts-quizzes

Preposition

Grade 1, 2, 3

Preposition

start
science-quizzes

PLANTS

Grades 1 to 5

PLANTS

start
language-arts-quizzes

Verb

Grades 1 to 5

Verb

start
math-quizzes

Whole Numbers

Grade 1, 2, 3, 4

Whole Numbers

start
language-arts-quizzes

NOUNS

Grades 1 to 5

NOUNS

start
math-quizzes

Geometric Shapes

Grades 1 to 5

Geometric Shapes

start
math-quizzes

Time

Grade 1, 2, 3, 4

Time

start

About Us

Unlock the exciting world of math, science, and language arts for elementary school children with Astrologiez's engaging online quizzes! Astrologiez transformed learning into an adventure, combining educational rigor with interactive fun to create the perfect learning platform for your little ones.

Our quizzes, designed specifically for first to fifth graders, not only reinforce learned concepts but also instill confidence through instant feedback. With Astrologiez online quiz, learning becomes a journey that kids can embark on at their own pace, whether they're cozied up at home or on-the-go.

Dive into our world where knowledge meets enjoyment, and watch your child's academic skills soar!

QUIZZES
FOR FUN