Question

Express each fractions or mixed number as a decimal 1/5=2/10
4/5=/10
2 1/2=2 /10

Answer 1

Let's convert the fractions and mixed numbers to decimals step by step:

1. **For \( \frac{1}{5} \)**:
- As you noted, \( \frac{1}{5} = 0.2 \).

2. **For \( \frac{4}{5} \)**:
- To convert \( \frac{4}{5} \) to decimal, you can divide 4 by 5:
- \( 4 \div 5 = 0.8 \).
- So, \( \frac{4}{5} = 0.8 \).

3. **For \( 2 \frac{1}{2} \)**:
- First, convert the mixed number to an improper fraction:
- \( 2 \frac{1}{2} = \frac{5}{2} \).
- To convert \( \frac{5}{2} \) to decimal, divide 5 by 2:
- \( 5 \div 2 = 2.5 \).
- So, \( 2 \frac{1}{2} = 2.5 \).

Summarizing:
- \( \frac{1}{5} = 0.2 \)
- \( \frac{4}{5} = 0.8 \)
- \( 2 \frac{1}{2} = 2.5 \)