## Relative Sizes of Measurement Units

#### Aligned To Common Core Standard:

**Grade 4 Fractions** - 4.MD.1

**Tips for Converting Units of Measure**
Converting measures of units can sometimes be a nightmare; however, there are a few tips and tricks that can be used to convert one unit to another safely. For example, we can convert km/h (kilometers per hour) to m/s (meters per second) like this:
One kilometer has 1000 meters and one hour has 3600 seconds, so the km/h is
1000/3600 = 0.277 m/s
**Tip 1** -
In order to know how to make it 1000/3600 and not write it, 3600/1000 is doing the conversion as fractions.
**Tip 2** -
Know when to divide and when to multiply.
Aside from knowing how many km is equal to how many meters, the trickiest part of converting is knowing when you should be dividing the number or multiplying. For example, in our previous example, we understood that 1 km equals 1000 m but how to get the two units converted into the other. Here is how you do it:
Remember, multiply gives us more, and division gives us less. Therefore,
When we move from a bigger unit to the smaller one, we multiply
When we move from a smaller unit to the bigger ones, we divide. This series of worksheets and lessons has students learn relative sizes of units of measure.

### Printable Worksheets And Lessons

- Compare the Decimals Step-by-Step Lesson- We go over the ten most common units seen on standards-based exams.

- Guided Lesson - We work the conversion into word problems and statements.

- Guided Lesson Explanation
- I try to use a more abstract way to solve these than just standard cross multiplication.

- Practice Worksheet
- These are all put in real world simple problems to make them a bit more real for the kids.

- Matching Worksheet - Simple conversion of unit matching.

#### Homework Sheets

I mixed short and sweet word problems with your standard conversion problems.

- Word Problems Homework 1 - Jack has 12 kg sugar. How many grams of sugar does Jack have?
- Word Problems Homework 2 - William went on vacations for 3 weeks. How many days did he spend on vacation?
- Unit Conversion Homework 3 - 5 gallon = ______pints

#### Practice Worksheets

You will see every type of format that I have ever seen these types of problems posed to students for this level.

- Unit Conversion Practice 1 - Write the correct units.
- Multiple Choice Practice 2 - 20 kilometers is how many miles? Which statement is true?
- Mixed Practice 3 - A cow makes 12,000 milliliters of milk daily. How many liters of milk does the cow make every day?