Compare Fractions and Decimals: Solving 2/20 ? 0.01

Fraction-Decimal Comparison with Simplification

Choose the appropriate sign (?):

220?0.01 \frac{2}{20}?0.01

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Choose the appropriate sign
00:03 Reduce the fraction so the denominator equals 10
00:06 Factor 20 into 2 and 10
00:11 Reduce what we can
00:20 Now convert from fraction to decimal
00:23 Write the numerator as a whole number
00:28 When denominator equals 10, move the decimal point once to the left
00:31 Place the decimal instead of the fraction, and compare
00:34 Choose the correct sign
00:37 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

Choose the appropriate sign (?):

220?0.01 \frac{2}{20}?0.01

2

Step-by-step solution

To solve this problem, we'll compare the fraction 220\frac{2}{20} to the decimal 0.010.01 by converting both to the same form.

Step 1: Simplify the fraction 220\frac{2}{20}.

220\frac{2}{20} simplifies to 110\frac{1}{10} by dividing both the numerator and the denominator by 2.

Step 2: Convert the simplified fraction 110\frac{1}{10} to a decimal.

Divide 1 by 10: 110=0.1\frac{1}{10} = 0.1.

Step 3: Compare the decimal form of the fraction with 0.010.01.

We have 0.10.1 and 0.010.01. Clearly, 0.1>0.010.1 > 0.01 since 0.10.1 is ten times larger than 0.010.01.

Therefore, the correct comparison sign for 220?0.01\frac{2}{20} ? 0.01 is >\gt.

3

Final Answer

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Key Points to Remember

Essential concepts to master this topic
  • Rule: Simplify fractions first, then convert to same form
  • Technique: Convert 220 \frac{2}{20} to 110=0.1 \frac{1}{10} = 0.1
  • Check: Compare in decimal form: 0.1 > 0.01 because 0.1 is ten times larger ✓

Common Mistakes

Avoid these frequent errors
  • Comparing fractions and decimals without converting to same form
    Don't try to compare 220 \frac{2}{20} and 0.01 directly = impossible to see which is bigger! Your brain can't easily compare different number forms. Always convert both numbers to the same form (both fractions OR both decimals) before comparing.

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

Should I convert the fraction to decimal or the decimal to fraction?

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Either way works! Converting fractions to decimals is often easier because you just divide. For 220 \frac{2}{20} , divide 2 ÷ 20 = 0.1, then compare 0.1 vs 0.01.

Do I always need to simplify the fraction first?

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Not always required, but it makes the math easier! 220 \frac{2}{20} becomes the simpler 110 \frac{1}{10} , and 1 ÷ 10 = 0.1 is easier than 2 ÷ 20.

How can I tell 0.1 is bigger than 0.01 without calculating?

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Look at the place values! 0.1 has a 1 in the tenths place, while 0.01 has a 1 in the hundredths place. Tenths are bigger than hundredths, so 0.1 > 0.01.

What if the decimal has more digits, like 0.012?

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Compare digit by digit from left to right! Start with tenths place: 0.1 has 1, 0.012 has 0. Since 1 > 0 in the tenths place, 0.1 > 0.012 automatically.

Can I use a number line to help compare?

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Absolutely! Draw a number line and mark both values. 0.01 is very close to 0, while 0.1 is much further right, making it clearly larger.

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