Grade 6Math

Comparing fractions

Compare fractions in Grade 6 math by finding a common denominator or cross-multiplying — determine which fraction is greater, lesser, or equal using equivalent fraction techniques.

Key Concepts

Property Use comparison symbols to show the relationship between fractions: < means is less than = means is equal to means is greater than.

Examples Using fraction manipulatives, we can see a $\frac{1}{2}$ piece is larger than a $\frac{1}{3}$ piece, so $\frac{1}{2} \frac{1}{3}$. Comparing three $\frac{1}{6}$ pieces to three $\frac{1}{8}$ pieces shows that $\frac{3}{6}$ is larger, so $\frac{3}{6} \frac{3}{8}$. Drawing two identical rectangles shows that $\frac{2}{3}$ of the area is larger than $\frac{3}{5}$ of the area, so $\frac{2}{3} \frac{3}{5}$.

Explanation Think of it like a pizza party! Would you rather have $\frac{1}{2}$ of a pizza or $\frac{1}{3}$? The fraction pieces show you which slice is bigger, so you know which fraction is greater. The bigger the denominator, the more slices the pizza is cut into, making each individual slice smaller. It’s a tasty way to visualize math!

Common Questions

How do you compare fractions with different denominators?

Find a common denominator for both fractions, convert them to equivalent fractions, then compare the numerators. The fraction with the larger numerator is greater.

What is cross-multiplication for comparing fractions?

Multiply the numerator of each fraction by the denominator of the other. Compare the products: 2/3 vs 3/4 → 2×4=8 and 3×3=9. Since 8 < 9, we have 2/3 < 3/4.

How can you use benchmarks like 1/2 to compare fractions?

Determine if each fraction is less than, equal to, or greater than 1/2. If one fraction is less than 1/2 and the other is greater, you can compare without finding a common denominator.

What common mistakes do students make when comparing fractions?

Students sometimes assume a larger denominator means a larger fraction (e.g., thinking 1/8 > 1/3). Remember: with the same numerator, a larger denominator means SMALLER pieces, so the fraction is smaller.