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### Unit 3: Lesson 1

Lesson 4: Converting units

# Ratios and measurement

Sal uses ratio reasoning to convert measurement units.

## Want to join the conversation?

• Just as practice for everyone: I have to bake a cake. The ratio I use between cups of flour and the amount of water (L) is 8:3. I know I have 14 1/7 cups, then how much amount of water will I need?
• Let me simplify the question for you:
8 corresponds to 14 1/7 cups
i.e 8 corresponds to 99/7 cups
Therefore 3 corresponds to how much?
=297/56
• what is a ratio
• a ratio is a comparison between two numbers
_ _
\(O-0)/
• It's Ok to struggle. You are still awesome anyway!
• It basically helps you on the subject that you're on, so no. It doesn't give you the answer to the specific problem you're on, Unless you're lucky.
• how does sal draw so good?
• he draws soo good
• Hi, there can you please help me I am not understanding the Ratios and measurement. For example, I am getting confused with the ratios and measurement
• Lets take the first example in the video. A ratio in the video would have been 168:1 while the measurement would have been hours and weeks.
I hope this will explain the difference between a ratio and a measurement.
• why do we need the double number line?
• To represent the ratio, one part of the ratio on one numberline and one on the other.