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## 5th grade

### Unit 14: Lesson 4

Converting US Customary units# US Customary units of weight review (oz & lb)

Review the size of ounces and pounds and how to convert between the two. Then, try some practice problems.

## Customary units of weight

Weight is a quantity of heaviness. For example, you are measuring the weight of your body when you step on to a scale.

In the customary system of measurement, the most common units of weight are the ounce (oz) and pound (lb).

### How much is an ounce?

A slice of bread has a weight of about 1 ounce:

### How much is a pound?

A soccer ball has a weight of about 1 pound:

*Want to learn more about customary units of weight? Check out this video.*

## Converting pounds to ounces

To convert pounds to ounces we multiply the number of pounds by start color #1fab54, 16, end color #1fab54.

**Example:**

## Converting ounces to pounds

To convert ounces to pounds we divide the number of ounces by start color #1fab54, 16, end color #1fab54.

**Example:**

*Want to learn more about converting pounds to ounces? Check out this video.*

## Practice set 2: Converting units of weight

*Want to try more problems like this? Check out these exercises:*

Convert larger units to smaller units

Converting between units

## Want to join the conversation?

- how do I know if I need to multiply or dived?(3 votes)
- To convert "bigger" units to "smaller" ones, you multiply.

To convert "smaller" to bigger, you divide.

Pound is something big, and ounce is something small - smaller parts make one big thing - 16 ounces are in a pound.

To convert pounds to ounces, you multiply by 16.

To convert ounces to pounds, you divide by 16.(10 votes)

- how many ounces in a pound? I am braindead:/(4 votes)
- Why is it called U.S Customary Units of Weight?(4 votes)
- Because units change in every country in the world. For example, in Japan, people don't use inches!(3 votes)

- Seems like most of you are with me. I din't get this either. =((4 votes)
- how does 8tons = 16000(2 votes)
- bc 8 times 2 is 16 and then you just add the 3 zeros.(2 votes)

- how to find the scientific notation(4 votes)
- Why is it called U.S Customary Units of Weight?(2 votes)
- its because the U.S is the only country that still uses the customary system(3 votes)

- the answer is 110(1 vote)

- What is the difference between weight and mass?(1 vote)
- Weight and mass are used interchangeably, but they don't mean the same thing.

Mass is the amount of matter in an object, while weight is the force of gravity by which the earth attracts towards it.

So your mass on Jupiter and Earth would be the same, but your weight would be different. But in math levels right now, you can use them interchangeably.(5 votes)

- how many inches are in a mile?(2 votes)
- There are 5280 feet in a mile and there are 12 inches in a foot. I'll leave it up to you to calculate the rest.(2 votes)