Review the key concepts, formulae, and examples before starting your quiz.
🔑Concepts
A proper fraction is a fraction where the numerator is less than the denominator (). These fractions represent a value less than and are located between and on the number line.
An improper fraction is a fraction where the numerator is greater than or equal to the denominator (). These fractions represent values greater than or equal to and are located at or to the right of on the number line.
To represent a fraction on a number line, divide each whole unit (e.g., the space between and , or and ) into equal parts. Each part represents the unit fraction .
Improper fractions can be converted into mixed numbers to make them easier to plot. For example, can be written as , meaning it is located of the way between and .
On the number line, as you move from left to right, the value of the fractions increases.
📐Formulae
💡Examples
Problem 1:
Represent the proper fraction on a number line.
Solution:
- Draw a number line and mark and .
- Divide the segment between and into equal parts (since the denominator is ).
- Starting from , count marks to the right.
- The third mark represents .
Explanation:
Since is a proper fraction, it must lie between and . Dividing the unit into parts gives segments of , and (which is ).
Problem 2:
Locate the improper fraction on the number line.
Solution:
- Convert to a mixed number: with a remainder of . So, .
- This point lies between the whole numbers and .
- Divide the space between and into equal parts.
- The point is the rd mark after the number .
Explanation:
Converting to a mixed number helps identify which two integers the improper fraction falls between. is greater than but less than .
Problem 3:
Identify the fraction represented by point if it is at the nd mark between and , where the interval is divided into equal parts.
Solution:
- The interval is between and , so the whole number part is .
- The denominator is because there are equal parts.
- The numerator is because it is at the nd mark.
- Point .
- As an improper fraction: .
Explanation:
The position indicates we have passed the whole number and moved an additional towards .