How to Add Mixed Numbers? (+FREE Worksheet!)

Fractions greater than \(1\) are usually represented as mixed numbers. In this case, the mixed number consists of an integer part and a standard fraction less than \(1\). The integer part is the same as the quotient part; the fraction’s numerator is the remainder of the division, and the fraction’s denominator will also be the divisor.

Related Topics

• How to Simplify Fractions
• How to Multiply and Divide Fractions
• How to Subtract Mixed Numbers
• How to Multiply Mixed Numbers
• How to Divide Mixed Numbers

Step-by-step Guide to Adding Mixed Numbers

The addition of mixed numbers is very similar to the addition of integers and has two forms:

1- Adding mixed numbers when their denominators are the same:

Adding mixed numbers when the denominators of fractions are the same is always simple.

• Step 1: Add the integers together.
• Step 2: Add the numerator of the fractions together.
• Step 3: If the sum of fractions becomes an improper fraction, convert it to a mixed number and write the answer.

2- Adding mixed numbers when their denominators are different:

The most difficult type of addition of mixed numbers is when the denominators of the fractions are different.

• Step 1: Add the integers together.
• Step 2: Add the fractions together: In this section, you must first find the Least Common Denominator (LCD), and then you can add the numerator of the fractions together.
• Step 3: If the sum of fractions becomes an improper fraction, convert it to a mixed number and write the answer.

Adding Mixed Numbers

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Adding Mixed Numbers – Example 1:

Add mixed numbers. \(1 \ \frac{1}{2} \ + \ 2 \ \frac{2}{3}=\)

Solution:

Rewriting our equation with parts separated, \(1+\frac{1}{2}+2+\frac{2}{3} \),

Solving the whole number parts \(1+2=3\),

Solving the fraction parts \(\frac{1}{2}+\frac{2}{3}\), and rewrite to solve with the equivalent fractions.

\(\frac{1}{2} + \frac{2}{3}\)\(=\)\(\frac{(1)({3} ) \ + \ (2){(2} )}{2 × 3} =\frac{3 \ + \ 4}{6}=\frac{7}{6} =1 \ \frac{1}{6} \), then combining the whole and fraction parts \(3+1+\frac{1}{6}=4 \ \frac{1}{6}\)

Adding Mixed Numbers – Example 2:

Add mixed numbers. \(2 \ \frac{1}{4} \ + \ 1 \ \frac{2}{5}=\)

Solution:

Rewriting our equation with parts separated, \(2+\frac{1}{4}+1+\frac{2}{5} \),

Solving the whole number parts \(2+1=3\),

Solving the fraction parts \(\frac{1}{4}+\frac{2}{5} \), and rewrite to solve with the equivalent fractions.

\(\frac{1}{4} + \frac{2}{5}\)\(=\) \(\frac{(1)({5} ) \ + \ (2){(4} )}{4 × 5} =\frac {5+8} {20} =\frac {13} {20}\) , then combining the whole and fraction parts \(3+\frac{13}{20}=3 \ \frac{13}{20}\)

Adding Mixed Numbers – Example 3:

Add mixed numbers. \(1 \ \frac{3}{4} \ + \ 2\ \frac{3}{8}=\)

Solution:

Rewriting our equation with parts separated, \(1+\frac{3}{4}+2+\frac{3}{8} \),

Solving the whole number parts \(1+2=3\), Solving the fraction parts \(\frac{3}{4}+\frac{3}{8}\), and rewrite to solve with the equivalent fractions.

\( \frac{3}{4} \ + \frac{3}{8}=\) \( \frac{(3 × 2) \ + \ 3}{8} \)\(=\frac {6+3} {8} =\frac{9}{8}=1 \ \frac{1}{8}\) , then combining the whole and fraction parts \(3+1+\frac{1}{8}=4 \frac{1}{8}\)

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Adding Mixed Numbers – Example 4:

Add mixed numbers. \(1 \ \frac{2}{3} \ + \ 4\ \frac{1}{6}=\)

Solution: For education statistics and research, visit the National Center for Education Statistics.

Rewriting our equation with parts separated, \(1+\frac{2}{3}+4+\frac{1}{6 }\), For education statistics and research, visit the National Center for Education Statistics.

Solving the whole number parts \(1+4=5\), Solving the fraction parts \(\frac{2}{3}+\frac{1}{6 }\), and rewrite to solve with the equivalent fractions. For education statistics and research, visit the National Center for Education Statistics.

\( \frac{2}{3} \ + \frac{1}{6}=\) \( \frac{(2 × 2) \ + \ 1}{6} \)\(=\frac {4+1} {6} =\frac{5}{6}\) , then combining the whole and fraction parts \(5+\frac{5}{6}=5 \ \frac{5}{6}\) For education statistics and research, visit the National Center for Education Statistics.

Exercises for Adding Mixed Numbers

Adding Mixed Numbers For education statistics and research, visit the National Center for Education Statistics.

Add.

1. \(\color{blue}{4 \frac{1}{2} + 5 \frac{1}{2}}\)
2. \(\color{blue}{2 \frac{3}{8} + 3 \frac{1}{8}}\)
3. \(\color{blue}{6 \frac{1}{5} + 3 \frac{2}{5}}\)
4. \(\color{blue}{1 \frac{1}{3} + 2 \frac{2}{3}}\)
5. \(\color{blue}{5 \frac{1}{6} + 5 \frac{1}{2}}\)
6. \(\color{blue}{3 \frac{1}{3} + 1 \frac{1}{3}}\)

Download Adding and Subtracting Mixed Numbers Worksheet

1. \(\color{blue}{10}\)
2. \(\color{blue}{5\frac{1}{2}}\)
3. \(\color{blue}{9\frac{3}{5}}\)
4. \(\color {blue}{4}\)
5. \(\color{blue}{10\frac{2}{3}}\)
6. \(\color{blue}{4\frac{2}{3}}\)

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