Solve Mixed Number Expression: Converting 2 54/900 to Decimal Form

Mixed Number Conversion with Fraction Simplification

254900= 2\frac{54}{900}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Convert to decimal fraction
00:03 Break down the number into whole number and fraction
00:07 We want the denominator to be some multiple of 10 and 10
00:11 Reduce the fraction, make sure to divide both numerator and denominator
00:27 Convert from fraction to decimal fraction
00:31 Add
00:43 And this is the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

254900= 2\frac{54}{900}=

2

Step-by-step solution

To solve this problem, we'll go through the following steps:

  • Step 1: Simplify the fraction 54900\frac{54}{900}.
  • Step 2: Convert the simplified fraction to a decimal.
  • Step 3: Add the decimal to the integer part of the mixed number.

Let's proceed with the solution:

Step 1: Simplify the fraction 54900 \frac{54}{900} .

To simplify, find the greatest common divisor (GCD) of 54 and 900. Here, GCD(54,900)=18 \text{GCD}(54, 900) = 18 . Therefore, we can divide both the numerator and the denominator by 18: 54900=54÷18900÷18=350 \frac{54}{900} = \frac{54 \div 18}{900 \div 18} = \frac{3}{50}

Step 2: Convert 350\frac{3}{50} to a decimal.

To do this, recognize that 350\frac{3}{50} can be converted by first transforming the denominator 50 into 100, common for decimal representation: 350=3×250×2=6100=0.06 \frac{3}{50} = \frac{3 \times 2}{50 \times 2} = \frac{6}{100} = 0.06

Step 3: Add the decimal to the whole number.

Now add the decimal 0.060.06 to the whole number 22: 2+0.06=2.06 2 + 0.06 = 2.06

Therefore, the conversion of the mixed fraction 2549002\frac{54}{900} to a decimal is 2.06\mathbf{2.06}.

3

Final Answer

2.06 2.06

Key Points to Remember

Essential concepts to master this topic
  • Simplification: Find GCD to reduce fractions to lowest terms first
  • Technique: Convert 350 \frac{3}{50} to 6100=0.06 \frac{6}{100} = 0.06 for decimal form
  • Check: Verify 2.06=2+54900 2.06 = 2 + \frac{54}{900} by converting back ✓

Common Mistakes

Avoid these frequent errors
  • Converting fraction to decimal without simplifying first
    Don't divide 54 ÷ 900 directly = messy long division with repeating decimals! This makes calculation errors likely and wastes time. Always simplify the fraction first using GCD, then convert the reduced fraction to decimal.

Practice Quiz

Test your knowledge with interactive questions

Write the following fraction as a decimal:

\( \frac{1}{100}= \)

FAQ

Everything you need to know about this question

Why do I need to simplify the fraction before converting to decimal?

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Simplifying makes the division much easier! Instead of dividing 54 ÷ 900 (complicated), you get 3 ÷ 50 (simple). This reduces calculation errors and saves time.

How do I find the GCD of large numbers like 54 and 900?

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Try dividing both numbers by common factors step by step. Start with small primes: both 54 and 900 divide by 2, then by 3, then by 3 again. Keep going until you can't divide by the same number anymore.

What if I can't make the denominator 100 or 1000?

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That's okay! You can still do regular division. For 350 \frac{3}{50} , divide 3.00 ÷ 50 = 0.06. The key is having a simplified fraction first.

How do I check if my decimal answer is correct?

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Convert your decimal back to a fraction and add to the whole number. If 2.06 = 26100 2\frac{6}{100} , then 6100 \frac{6}{100} should simplify back to your original fraction!

Can I just use a calculator instead of simplifying?

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While calculators work, learning to simplify builds number sense and helps you spot wrong answers quickly. Plus, simplified fractions are easier to work with in future problems!

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