.40 as a Fraction
How to write .40 as a Fraction? Converting a decimal to a fraction involves expressing the decimal as a ratio of two numbers, with the denominator being a power of 10. The resulting fraction is usually in its simplest form, which means that the numerator and denominator have no common factors other than 1.
Step-by-Step Calculation:
What is .40 as a Fraction?
.40 Decimal = 2/5 as a Fraction
How to Convert Decimal to Fraction
To convert a decimal number to a fraction, follow these steps:
- Regular Decimals: Count decimal places, write as fraction with denominator as power of 10, then simplify.
- Repeating Decimals: Use algebraic method - multiply by powers of 10 to align repeating parts, then subtract to eliminate repetition.
- Simplification: Find the Greatest Common Divisor (GCD) and divide both numerator and denominator by it.
Decimal to Fraction Conversion Examples
Here are some examples of decimal numbers converted to fractions:
| Decimal | Fraction | Percentage |
|---|---|---|
| 2.7755575615629E-17 | 0/1 | 2.7755575615629E-15% |
| 0.1 | 1/10 | 10% |
| 0.2 | 1/5 | 20% |
| 0.3 | 3/10 | 30% |
| 0.4 | 2/5 | 40% |
| 0.5 | 1/2 | 50% |
| 0.6 | 3/5 | 60% |
| 0.7 | 7/10 | 70% |
| 0.8 | 4/5 | 80% |
| 0.9 | 9/10 | 90% |
Conclusion
Converting decimals to fractions is a useful skill in mathematics. Whether dealing with regular or repeating decimals, the methods outlined above provide a clear path to expressing decimals as fractions. Practice with various decimal numbers to become proficient in these conversion techniques.