Evaluate Expressions with Algebraic Substitution

replacing a variable with a number or expression

• equivalent fractions

• substitution

• evaluate

• equivalent expressions

• similar figures

math phrase that combines numbers AND variables (letters: 3b or 5x) by using (+, -, *, ÷). *does not have an equal sign (=)

• algebraic expression

• equivalent expressions

• reduce

• substitution

• ratio

to replace variables (letters) with numbers in an algebraic expression

• equivalent fractions

• ratio

• reduce

• evaluate

• substitution

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
2a² + c²   

• 22

• 34

• 68

• 43

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

• 17

• 19

• 13

• 29

• -17

• -13

• 13

• -4

Three times a number increased by nine

• 3h-9

• 3(h-9)

• 3(h+9)

• 3h+9

the sum of fifty-two and a number

• n-52

• 52 + n

• 52/n

• 52n

Work out the value of the following expressions when a = 3, b = 4 and c = 5.
3ab

• 10

• 12

• 15

• 36

Simplify the Expression: 5(x + 2) + 2x

• 7x + 2

• 7x + 10

• 5x + 4

• 7x + 7