Evaluate Expressions (15Q)

Front

Evaluate the expression: 2a + 4b for a = 10 and b = 6

Back

44

Front

Evaluate the expression: a + b for a = 3 and b = 4

Back

7

Front

Evaluate the expression: 3x + 8 for x = 2

Back

14

Front

Evaluate the expression: x ÷ 4 for x = 8

Back

2

Front

Evaluate the expression: 2(a - 5) + 2 for a = 15

Back

22

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with given numbers.

Front

What is a variable in mathematics?

Back

A variable is a symbol (often a letter) that represents an unknown value in an expression or equation.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the value of 'x' in the expression 5x = 20?

Back

x = 4