Review Expressions - EXCR -Q2

Front

What is a variable in an expression?

Back

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

Front

What does the coefficient in an expression represent?

Back

A coefficient is a numerical factor that multiplies a variable in an expression.

Front

Evaluate the expression: 6h + 10 if h = 2.5.

Back

25

Front

What is the expression for the total number of wrapped presents if Jamie wraps for h hours and has already wrapped 10 presents?

Back

6h + 10

Front

Identify the variable in the expression: 4mn + 2.

Back

m and n are both variables.

Front

What is the result of evaluating: a^2 - b^3 if a = -4 and b = -2?

Back

24

Front

What is the expression for the square of the sum of numbers: (9 - 5 + 3)^2?

Back

(7)^2 = 49.

Front

What is the value of the expression: (9 - 5 + 3)^2 - 32?

Back

17

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their respective values.

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.