Common Core: 6th Grade Math

Explore the foundational concepts of mathematics through engaging lessons and problem-solving strategies designed for 6th graders.

Basic Concepts

Understanding Ratios

Discovering Ratios

Ratios are a way to compare two quantities, like the number of apples to oranges in a fruit basket. Ratios are written as \( a:b \), where \( a \) and \( b \) are numbers. You can also write them as fractions, like \( \frac{a}{b} \).

Why Are Ratios Important?

Ratios help us describe relationships in everyday life, such as mixing paint colors or following a recipe.

How to Use Ratios

  • Simplifying Ratios: Just like reducing fractions, you can simplify ratios by dividing both numbers by their greatest common factor.
  • Equivalent Ratios: Two ratios are equivalent if they have the same value when simplified.

Real-World Connections

Ratios are everywhere! Whether you’re comparing the number of wins to losses in a sports season or figuring out how much water to add to juice concentrate, you’re using ratios.

Practice Time

Try finding ratios around your home, like the number of red to blue shirts in your closet!

Examples

  • A recipe calls for 2 cups of flour and 3 cups of sugar. The ratio of flour to sugar is 2:3.

  • In a bag with 4 green marbles and 6 blue marbles, the ratio of green to blue marbles is 4:6, which simplifies to 2:3.

In a Nutshell

Ratios compare two quantities and help us understand real-world relationships.

Key Terms

Ratio
A comparison of two quantities using division.
Equivalent Ratios
Ratios that express the same relationship, even if they use different numbers.