Number Line Problem: Identify Missing Points Between 0 and 1

Fraction Number Lines with Equal Intervals

What are the missing numbers (?) on the numer line below?

000??????111

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Which numbers appear on the number line?
00:08 It seems the line is divided into 7 segments
00:12 And each segment equals one-seventh, let's count them
00:23 Let's mark the required numbers
00:29 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

What are the missing numbers (?) on the numer line below?

000??????111

2

Step-by-step solution

Let's first count how many points, including the number 1, are on the number line.

Since there are 7 in total, we'll define the 0 point as the fraction:

07 \frac{0}{7}

We will also define 1 as the following fraction:

77 \frac{7}{7}

Now let's fill in each point on the line to discover which numbers are missing:

3

Final Answer

27,57 \frac{2}{7},\frac{5}{7}

Key Points to Remember

Essential concepts to master this topic
  • Equal Spacing: Count total points to find the denominator
  • Technique: 7 points from 0 to 1 means each interval is 17 \frac{1}{7}
  • Check: Verify pattern: 07,17,27,37,47,57,67,77 \frac{0}{7}, \frac{1}{7}, \frac{2}{7}, \frac{3}{7}, \frac{4}{7}, \frac{5}{7}, \frac{6}{7}, \frac{7}{7}

Common Mistakes

Avoid these frequent errors
  • Counting only the marked points instead of all intervals
    Don't count just the visible marks = wrong denominator! This leads to fractions like 1/5 or 1/6 instead of 1/7. Always count the total number of equal parts the line is divided into, including both endpoints.

Practice Quiz

Test your knowledge with interactive questions

What are the missing numbers (?) on the numer line below?

000??????111

FAQ

Everything you need to know about this question

How do I know what denominator to use for the fractions?

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Count the total number of equal intervals from 0 to 1. In this problem, there are 7 points total (including 0 and 1), which means 6 intervals, but since we need 7 equal parts to place all points, the denominator is 7.

Why are some points marked with question marks?

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The question marks show the missing fractions you need to identify. Look at the pattern of known points and fill in the gaps systematically.

How do I figure out which fractions are missing?

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Start from 0 and count up: 07,17,27,37,47,57,67,77 \frac{0}{7}, \frac{1}{7}, \frac{2}{7}, \frac{3}{7}, \frac{4}{7}, \frac{5}{7}, \frac{6}{7}, \frac{7}{7} . The positions with question marks correspond to 27 \frac{2}{7} and 57 \frac{5}{7} .

What if I counted wrong and got a different denominator?

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Double-check by verifying the endpoints! The first point should be 0n=0 \frac{0}{n} = 0 and the last should be nn=1 \frac{n}{n} = 1 . If your denominator doesn't make this work, recount the intervals.

Can I use decimals instead of fractions?

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While you could convert to decimals, fractions show the exact relationship to the whole. Plus, the answer choices are given as fractions, so it's better to work with fractions throughout.

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