Relearning: Expressions Checkpoint

Front

What are coefficients in an expression?

Back

Coefficients are the numerical factors in terms of an expression. For example, in the expression 8a + 4 + a + 2, the coefficients are 8 (for 'a') and 1 (for the second 'a').

Front

How do you simplify the expression a + c + 2a + 6c + a + 9a + c + a?

Back

Combine like terms: 1a + 2a + 1a + 9a = 14a and 1c + 6c + 1c = 8c, resulting in 14a + 8c.

Front

What is the result of simplifying the expression 9a + 12 + (-8) + (-5a)?

Back

Combine like terms: 9a - 5a = 4a and 12 - 8 = 4, resulting in 4a + 4.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same exponent. For example, 3a and 5a are like terms.

Front

Write an expression for the cost of c chicken fingers at $1.25 each and a soda for $2.50.

Back

The expression is 1.25c + 2.50.

Front

What is the first step in simplifying an expression?

Back

Identify and combine like terms.

Front

What does it mean to combine like terms?

Back

Combining like terms means adding or subtracting coefficients of terms that have the same variable and exponent.

Front

What is a constant term in an expression?

Back

A constant term is a term that does not contain any variables. For example, in the expression 5x + 3, the number 3 is a constant term.

Front

How do you identify coefficients in an expression?

Back

Coefficients are the numbers that multiply the variables in an expression. For example, in 4x^2, the coefficient is 4.

Front

What is the simplified form of 3x + 4x - 2x?

Back

The simplified form is 5x.