Organize Decimals and Fractions: Sorting Numbers Above and Below 60%

Percentage Comparison with Mixed Number Forms

Organise the following into two groups of parts greater than 60% and parts less than 60%:

0.7,67100,59100,0.2,45 0.7,\frac{67}{100},\frac{59}{100},0.2,\frac{4}{5}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:15 Let's sort them into two groups.
00:18 First, we'll change the percentages into fractions and decimals. Let's keep going!
00:32 Next, we'll figure out if each choice is bigger or smaller than the given value.
01:21 And that's how we find the solution to the question!

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

Organise the following into two groups of parts greater than 60% and parts less than 60%:

0.7,67100,59100,0.2,45 0.7,\frac{67}{100},\frac{59}{100},0.2,\frac{4}{5}

2

Step-by-step solution

To categorize the numbers based on being greater than or less than 60%, we will first convert the fractions into decimals:

  • 0.70.7 is already a decimal, equivalent to 70%70\%, which is greater than 60%60\%.
  • 67100=0.67 \frac{67}{100} = 0.67, equivalent to 67%67\%, which is greater than 60%60\%.
  • 59100=0.59 \frac{59}{100} = 0.59, equivalent to 59%59\%, which is less than 60%60\%.
  • 0.20.2 is already a decimal, equivalent to 20%20\%, which is less than 60%60\%.
  • 45=0.8 \frac{4}{5} = 0.8, equivalent to 80%80\%, which is greater than 60%60\%.

Based on these conversions and comparisons, we organize them into two groups:

The numbers less than 60%60\% are 0.20.2 and 59100\frac{59}{100}.

The numbers greater than 60%60\% are 0.70.7, 67100\frac{67}{100}, and 45\frac{4}{5}.

Rechecking our work against the answer choices given confirms that the correct grouping is choice 3. Therefore, the solution is as follows:

0.2,59100<60% 0.2,\frac{59}{100}<60\%

0.7,67100,45>60% 0.7,\frac{67}{100},\frac{4}{5}>60\%

3

Final Answer

0.2,59100<60% 0.2,\frac{59}{100}<60\%

0.7,67100,45>60% 0.7,\frac{67}{100},\frac{4}{5}>60\%

Key Points to Remember

Essential concepts to master this topic
  • Conversion: Change all numbers to same form before comparing
  • Technique: Convert 45 \frac{4}{5} to 0.8 = 80% > 60%
  • Check: Verify each: 0.7=70%, 67100 \frac{67}{100} =67%, 59100 \frac{59}{100} =59%, 0.2=20%, 45 \frac{4}{5} =80% ✓

Common Mistakes

Avoid these frequent errors
  • Comparing numbers without converting to same form
    Don't compare 0.7 directly to 67100 \frac{67}{100} without converting = confusion about which is larger! Mixing decimals, fractions, and percentages makes comparison impossible. Always convert all numbers to the same form (all decimals, all percentages, or all fractions) before comparing.

Practice Quiz

Test your knowledge with interactive questions

Approximately what is \( \frac{11}{50} \) written as a percentage?

FAQ

Everything you need to know about this question

Should I convert everything to decimals or percentages?

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Either works perfectly! Converting to percentages might feel more natural since you're comparing to 60%, but decimals are often easier to calculate. Pick whichever feels more comfortable.

How do I convert fractions like 4/5 to decimals quickly?

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Divide the numerator by the denominator: 45=4÷5=0.8 \frac{4}{5} = 4 ÷ 5 = 0.8 . For percentages, multiply by 100: 0.8 × 100 = 80%.

What if I can't remember how to convert fractions to decimals?

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Try finding an equivalent fraction with 100 as the denominator first! For example: 45=80100=80% \frac{4}{5} = \frac{80}{100} = 80\% . This makes comparison with 60% much easier.

Why is 67/100 greater than 60% but 59/100 is not?

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Because 67100=67% \frac{67}{100} = 67\% and 59100=59% \frac{59}{100} = 59\% . Since 67% > 60% but 59% < 60%, they belong in different groups!

Is there a pattern to recognize which fractions are greater than 60%?

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Yes! For fractions with denominator 100, just look at the numerator: if it's greater than 60, the fraction is greater than 60%. For other fractions like 45 \frac{4}{5} , convert first.

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