Introduction to ratios | Ratios, rates, and percentages | 6th grade | Khan Academy

TL;DR

The video explains how to calculate and reduce ratios using the example of apples and oranges.

Transcript

Voiceover:We've got some apples here and we've got some oranges and what I want to think about is, what is the ratio, what is the ratio of apples ... Of apples, to oranges? To oranges. To clarify what we're even talking about, a ratio is giving us the relationship between quantities of 2 different things. So there's a couple of ways that we can spe... Read More

Key Insights

• 🥳 Ratios indicate the relationship between quantities of two different things.
• 🥳 Ratios can be calculated by counting the number of each item.
• 🥳 Reducing ratios involves dividing both numbers by a common factor.

Questions & Answers

Q: What is a ratio?

A ratio represents the relationship between quantities of two different things. It shows how many times one quantity is contained within another. In this video, the ratio is being calculated for the number of apples to oranges.

Q: How can we calculate the ratio of apples to oranges?

To calculate the ratio of apples to oranges, we count the number of each item and express it as a fraction. In this video, the ratio of apples to oranges is 6 to 9 or 2 to 3 after reducing.

Q: How can we reduce ratios?

Ratios can be reduced by finding a common factor and dividing both numbers by it. In this video, the ratio of 6 to 9 is reduced by dividing both numbers by 3, resulting in a ratio of 2 to 3.

Q: What does the ratio of oranges to apples represent?

The ratio of oranges to apples represents the number of oranges for every apple. In this video, the ratio is 9 to 6 or, after reducing, 3 to 2.

Summary & Key Takeaways

• The video introduces the concept of ratios and explains that they represent the relationship between quantities of two different things.

• Using the example of counting apples and oranges, the video demonstrates how to calculate the ratio by counting the number of each item.

• The video also shows how to reduce ratios by dividing the numbers by a common factor.