Convert Decimal to Fraction: Simplifying 0.75 to Lowest Terms

Fraction Conversion with Decimal Simplification

Reduce the following fraction:

0.75 0.75

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Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Reduce the following fraction:

0.75 0.75

2

Step-by-step solution

To reduce 0.75 0.75 , notice that it represents 75100 \frac{75}{100} .

The greatest common divisor of 75 and 100 is 25, so divide both the numerator and the denominator by 25.

This reduces the fraction to 34 \frac{3}{4} , which is 0.75 0.75 when expressed as a decimal.

3

Final Answer

0.75 0.75

Key Points to Remember

Essential concepts to master this topic
  • Rule: Convert decimal to fraction by placing over appropriate power of 10
  • Technique: Find GCD of numerator and denominator: GCD(75,100) = 25
  • Check: Divide 3÷4 = 0.75 to verify simplified fraction equals original decimal ✓

Common Mistakes

Avoid these frequent errors
  • Leaving fraction unreduced after conversion
    Don't stop at 75100 \frac{75}{100} = still has common factors! This gives you the correct value but not the simplified form required. Always find the GCD and divide both numerator and denominator by it to get lowest terms.

Practice Quiz

Test your knowledge with interactive questions

Reduce the following fraction:

\( 0.30 \)

FAQ

Everything you need to know about this question

How do I know what power of 10 to use in the denominator?

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Count the decimal places! 0.75 has 2 decimal places, so use 100 (which is 10²). For 3 decimal places, use 1000, and so on.

What if I can't find the GCD easily?

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Start by dividing both numbers by small primes like 2, 3, 5. For 75 and 100: both divide by 5 to get 15 and 20, then both divide by 5 again to get 3 and 4.

Why can't 0.75 be simplified to something other than 3/4?

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Because 34 \frac{3}{4} is in lowest terms - the GCD of 3 and 4 is 1. When the GCD is 1, you cannot simplify further!

How can I check if my fraction is fully simplified?

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Make sure the numerator and denominator share no common factors except 1. If you can divide both by the same number, it's not fully simplified yet.

Does the decimal 0.75 always equal 3/4?

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Yes, absolutely! Decimals and fractions are just different ways to represent the same number. 0.75=34=75% 0.75 = \frac{3}{4} = 75\% - they're all equivalent.

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