Expression with Substitution All Operations

The process of substituting a given value for a variable and performing operations given following order of operations.

• equation

• evaluate

• expression

• substitution

To replace a variable with a number in an algebraic expression

• Variable

• Term

• Substitution

• Inequality

What is it called when you want to solve or replace the unknown quantity in an equation with the value?

• Simplify

• Substitution

• Evaluate

• Solve

What is it called when you want to replace the variable in an expression with a number, and then SOLVE IT.

• Evaluate

• Expression

• Order of Operations

What is the value of 2a - 3b + 6 when a = 2 and b = -5?

Mathematical Equivalence

ON

Evaluate 2x + 5y - 4 when x = 11 and y = 3

Mathematical Equivalence

ON

Evaluate the expression. Let g = 3 h = 9

4g + 2h + 4

Mathematical Equivalence

ON

Evaluate 8.7j – 9.8k when j = 7 and k = 4.

Mathematical Equivalence

ON

Answer explanation

Evaluate 8.7j – 9.8k when j = 7 and k = 4.

First, substitute for j and k:

8.7(7) - 9.8(4) then multiply.

60.9 - 39.2 and finally subtract

21.7

Tags

CCSS.MATH.CONTENT.7.EE.B.4.a

Evaluate the expression for the given values. 5x - 3y + 2z

• 17

• 19

• 13

• 29

The process of replacing a variable with a given number (quantity). We use this to evaluate expressions!

• Difference

• Substitution

• Equation

• Removal