Worked examples
Two examples
Example 1
What fraction of the shape is shaded?
- Count the equal parts: 8. That is the denominator, the bottom number.
- Count the shaded parts: 3. That is the numerator, the top number.
Answer: 38
Example 2
A bar is cut into 6 equal parts, and 4 are shaded. What fraction is shaded?
- 6 equal parts, 4 shaded: 46.
- It simplifies to 23; either answer is right here.
Answer: 46 or 23
Where this is taught: Quiz 8: Fractions, “The two numbers do two different jobs”
The drill
Ten problems
How many:
Type a fraction with a slash, like 3/4. Any fraction equal to the right one is accepted here. Then press Check my answers at the bottom.Write each answer on the line, in simplest form. The answer key, with the reasoning, is on the last page.