## Evaluating Written Expressions

#### Aligned To Common Core Standard:

**Grade 6 Expressions and Equations** - 6.EE.A.2a

Tips for evaluating written expressions -
Though mathematics is all about numbers, the algebraic section of mathematics uses letters, words, and expressions to define a problem. In a given word problem, many words play a crucial role in deciphering the answer, but most times, it is challenging to evaluate certain words and expressions. Learning to assess the expressions can make you crack the answer quickly.
Let's learn the art of doing it: Replace the letters of expression with the assigned values
The first step is to carefully replace the letters of expression with the values assigned in the word problem. Now you have an expression with only numbers in it. Write each value in parentheses.
**Perform the operations** - After substituting the values, now perform the operation in the correct order of the expression. Don't forget to use the correct order of operations.
Perform with exponents: Make sure that you consider the exponents too and perform correct mathematical operations.
Here's an example of the expression:
2x^2 – x + y, for x = 3 and y = –2.
2(3)^2 – (3)+ (-2), 18 – 3 – 2, The answer is 13.

### Printable Worksheets And Lessons

- Writing Expression Step-by-step
Lesson- We give you an expression in sentence form and ask you
to bring the integers to life.

- Guided Lesson -
Explain the expression in word and numeric form. Tell us if an expression
is true or false.

- Guided Lesson Explanation
- I spent a great deal of time on this one. See if it helps!

- Practice Worksheet -
Write each expression in numeric form. What's with the lady bug?

- Matching Worksheet - Find a match between the numeric and sentence form of the expressions.

#### Homework Sheets

You start by making sense of sentences and then you write your own expression sentences.

- Homework 1 - Write the following in number form: The difference of 75 and g.
- Homework 2 - The word "difference" indicates subtraction in the order that it is stated.
- Homework 3 - Observe the sign between the two integers above. It is a division symbol.

#### Practice Worksheets

I get a lot of people sending me compliments on these. Not sure why?

- Practice 1 - A quotient signifies the operation of division.
- Practice 2 - So this expression can be written as a quotient of x by 8.
- Practice 3 - Is (7 x y) an expression shown by words: The sum of 7 and y?