Convert the Decimal Fraction: Express 51/1000 in Decimal Form

Decimal Conversion with Thousandths Place

511000= \frac{51}{1000}=

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:05 Let's convert this to a decimal fraction. First step!
00:10 Write the numerator as one whole number. Great job!
00:15 Now, pay attention to the denominator. We'll move the decimal point to the left.
00:21 There are three zeros in the denominator. This means we move three times to the left. Almost there!
00:28 There you have it! That's the solution. You did it!

Step-by-step written solution

Follow each step carefully to understand the complete solution
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Understand the problem

511000= \frac{51}{1000}=

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Step-by-step solution

To solve this problem, we'll follow these steps:

  • Understand the given fraction 511000 \frac{51}{1000} and its relation to decimals.
  • Convert the fraction to a decimal.
  • Compare and verify with the provided answer choices.

Now, let's work through each step:
The denominator of our fraction is 1000, which tells us it's in the thousandths place in decimal form.
Therefore, we need to place the number 51 in the thousandths place. Doing so gives us the decimal 0.051.
Now let's verify with choices: Among the options, 0.051 perfectly matches our calculated result.

Therefore, the solution to the problem is 0.051 0.051 .

3

Final Answer

0.051

Key Points to Remember

Essential concepts to master this topic
  • Place Value Rule: Denominator 1000 means thousandths decimal place position
  • Technique: Place 51 in thousandths: 0.051 (three decimal places)
  • Check: Convert back: 0.051 × 1000 = 51 ✓

Common Mistakes

Avoid these frequent errors
  • Placing digits in wrong decimal positions
    Don't just divide 51 ÷ 1000 = 0.51 without considering place value! This puts 51 in hundredths instead of thousandths, giving the wrong answer. Always count decimal places: 1000 has 3 zeros, so the answer needs exactly 3 decimal places.

Practice Quiz

Test your knowledge with interactive questions

Write the following fraction as a decimal:

\( \frac{5}{100}= \)

FAQ

Everything you need to know about this question

How do I know how many decimal places to use?

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Count the zeros in the denominator! Since 1000 has 3 zeros, your decimal answer needs exactly 3 decimal places. So 511000 \frac{51}{1000} becomes 0.051.

Why isn't the answer 0.51?

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0.51 equals 51100 \frac{51}{100} , not 511000 \frac{51}{1000} ! The extra zero in 1000 means you need one more decimal place, making it 0.051.

What if I have a fraction like 7/100?

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Same rule applies! Count the zeros: 100 has 2 zeros, so 7100=0.07 \frac{7}{100} = 0.07 (2 decimal places).

How can I check if my decimal is correct?

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Multiply your decimal by the original denominator: 0.051 × 1000 = 51 ✓. If you get the original numerator, your answer is right!

What if the numerator has more digits than zeros in denominator?

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For example, 12341000=1.234 \frac{1234}{1000} = 1.234 . The decimal point moves to create exactly 3 decimal places, even if it creates a number greater than 1.

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