## Choosing Appropriate Units in Formulas

#### Aligned To Common Core Standard:

**High School** - HSN-Q.A.1

How to Make Sure You Choose Appropriate Units in Formulas? Using the right units is a crucial step when solving numerical. Units give a number a sense and help us understand exactly what it represents. A number without a unit does not hold any meaning. For instance, you ask a salesperson at a carpet store what size will be best for a rug that you need to place under your living room's center table, and he replies with “55." Now, what is 55? Is it a square inch? Square feet? Or square meters? Yes, we can apply some common sense, but for someone who does not know much, he will have no clue what the salesperson is saying. So, how to choose appropriate units in formulae? - Read the numerical and identify the units mentioned in the question - Once you have identified the units, check whether all quantities have the same units or not - If the units are not the same, you need to carry out conversions - Only when you have converted all units, you can perform the operation the numerical is asking you to carry out You need to memorize the common units so that you can choose the right ones in the right place. Length: kilometers (km), meters (m), centimeters (cm), millimeters (mm) Mass: gram (g), kilogram (kg), ton (t), milligram (mg) Capacity: liter (l), milliliter (ml), cubic centimeter (cc). These worksheets and lessons help students identify the proper units to satisfy the word problems they are solving.

### Printable Worksheets And Lessons

- Milk and Traveling Step-by-step Lesson- What units do you use for a drum of milk and the distance between two cities?

- Guided Lesson - More of a shotgun approach to learning measurement units. A great review though.

- Guided Lesson Explanation - I try to give you a mental picture of everything, but drawing pictures for yourself might be more effective.

- Practice Worksheet - We tuned formula based problems into simple word problem. Make sure to label the units properly.

- Matching Worksheet - Match the outputs to the their product, sum, or difference.

#### Homework Sheets

Units make a huge difference in the real world.

- Homework 1 - Find the most appropriate unit to measure the amount of soup in a bowl.
- Homework 2 - Johnson went to market to buy sugar. Johnson got confused regarding the units of measure. Which unit would be most appropriate to measure the weight of sugar?
- Homework 3 - Identify the most appropriate unit to measure the amount of coffee in a mug?

#### Practice Worksheets

The existence of several different measurement systems complicates the world a bit.

- Practice 1 - Mack went to market to buy a case of fruit. Mack got confused regarding the units of measure. Which unit would be most appropriate to measure the weight of a case of fruit?
- Practice 2 - Identify the most appropriate unit to measure volume of a carton of orange juice?
- Practice 3 - Find the best unit to measure the weight of a cherry pie?

#### Math Skill Quizzes

Put it all together here.