# MATH

• WELCOME TO MATH!

You will recall that capacity is the amount (usually of liquid) a container can hold.
For example, a vase might be able to hold one quart of water, so we would say its capacity is one quart.
However, we could also put pebbles in the vase and talk about the measure of pebbles we are able to fit ... It's just that when we use the term capacity, we usually are talking about liquids.

If you were to look at a bottle of water or soda pop you might have at your house, it would tell you on the lable how many ounces the bottle holds. (Ounces are a U.S. unit of measure.)
It is also very likely the lable of the bottle will tell you how many milliliters or liters of water or pop the bottle holds. (Milliliters and liters are metric units of measure.)

►Please open your Math textbook to page 276 and look at the picture of the eyedropper.
Obviously, an eyedropper would hold a small amount of liquid, so we would need to use small units of measure to describe the amount of liquid it holds.
We will use milliliters (mL) to describe small amounts of liquid.

►You will notice in the second picture on page 276, there is a picture of a bottle of water which holds one liter (L). Your book tells you that a one-liter container would fill about four glasses.

### When I look at the label on my bottle of soda pop, the label tells me the bottle contains 500 mL of soda pop.

Your textbook states that it takes 1000 milliliters (mL) to equal 1 liter (L).
Q: If my pop bottle contains 500 mL of pop, what would that translate to in liters??
Let's see ... I have 500 mL, and it takes 1,000 mL to make a liter.
I can compare 500 to 1,000 ... I know that 500 is half of 1,000.
A: That's right! It contains one half of one liter!

►Okay, let's look at the problems at the bottom of page 276.
Think in your head what you believe the correct answers to problems 1 - 6 would be, and then compare them to the answers I have written below.

1. glass of juice; less than
2. pool; more than
3. bucket; more than