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## 6th grade (Illustrative Mathematics)

### Course: 6th grade (Illustrative Mathematics)>Unit 2

Lesson 1: Lesson 1: Introducing ratios and ratio language

# Basic ratios

Sal writes ratios from images, contexts, and tables.

## Want to join the conversation?

• If you see this upvote it XD
• okay :D
• In real life I never used ratios, so my question is are ratios very useful?
• Ratios are very usefull in cooking.
For example, for every 2 cups of flours I need 1 cup of sugar. 2:1 ratio of flour to sugar.
• Do u have videos like this in Spanish my school does math in Spanish and the vocabulary is different making it a lot harder ?
• You can turn on Spanish subtitles.
• "This is strangely fun" XD
• me joining just to read comments a lot but this is just SAD comments...
• what does it really mean when Sal says for every blank there is blank
• it is just different way of say for example 3 to 4 so you could also do 3:4 or for every 3 there is 4. So it i just a different way to specify the problem. there are 3 different ways you can say or write it.
• Can a rate be converted into a ratio, and vice versa?
• Yeah, you can convert ratios into rates and back, although going back is less useful. It is called unit rates. Unit rates, which are a ratio in which the denominator's unit is one, allow us to compare. To calculate unit rates, we simply divide the two numbers in the fraction. The resulting decimal form is the unit rate. Unit prices are a special type of unit rate comparing an item's cost per unit, such as dollars and cents.