Writing and Evaluating Expressions

Writing algebraic expressions

100

Write an expression for the product of 3 and w.

What is 3w?

200

Write an expression for w less than 8.

What is 8 - w?

300

Write an expression for the difference of twice p and 9.

2p - 9     or     9 - 2p

400

Twice the sum of 6 and x

2(6 + x) 

500

Write an expression for the difference of r and 8 times 9.

9(r - 8)      or     9(8 - r)

Evaluating Expressions& Equivalent Expressions

100

3a - 2 when a = 7

3(7)-2 = 19

200

p/4 + 3 when p = 24

24/4 + 3 = 9

300

7(n + 4) when n=8

7(8+4) = 84

400

(30/b) + 9 when b =6

(30/6)+9=14

500

(24/4 - c) x a , when a=5 and c=1

(24/4 - 1) * 5 = 25

Evaluating Expressions

100

Evaluate when p = 6:  

p + 9

What is 15?

200

Evaluate the expression:

31 - g , when g is 3.

What is 28?

300

Evaluate the expression:

4w , when w is 13.

What is 52?

400

Evaluate the expression:

2rz - 9 , when r is 2 and z is 5.

What is 11?

500

Evaluate the expression: 

3(x + 4) - w, when x is 3 and w is 8.

What is 13?