ESL: 6.1 Lesson Flashcard

Front

What is a coefficient in an algebraic expression?

Back

A coefficient is a numerical factor that multiplies a variable in an algebraic expression. For example, in the expression 4x, 4 is the coefficient.

Front

Evaluate the expression 2a + 4b if a = 10 and b = 6.

Back

44

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 the coefficient of x in the expression 8 + 5x - y?

Back

5

Front

Evaluate the expression m - n if m = 29 and n = 11.

Back

18

Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 2 is an algebraic expression.

Front

Evaluate the expression 5m + 7 if m = 5.

Back

32

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents a number that can change or vary.

Front

What is the difference between a constant and a variable?

Back

A constant is a fixed value that does not change, while a variable can take on different values.

Front

What is the purpose of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.