Unit 2 Test (Pre-Algebra)

Front

What is a monomial?

Back

A monomial is a polynomial with only one term, which can be a number, a variable, or a product of numbers and variables.

Front

How do you simplify a monomial expression?

Back

To simplify a monomial expression, combine like terms by adding or subtracting their coefficients.

Front

What is the formula for dividing a number by the sum of another number and a constant?

Back

The formula is \( \frac{a}{b + c} \), where \( a \) is the number being divided, \( b \) is the variable, and \( c \) is the constant.

Front

What does it mean to factor an expression?

Back

Factoring an expression means to break it down into simpler components (factors) that, when multiplied together, give the original expression.

Front

What is the result of multiplying two numbers in scientific notation, such as \( (2.1 \times 10^2) \times (3.0 \times 10^4) \)?

Back

To multiply, multiply the coefficients (2.1 and 3.0) and add the exponents (2 and 4) to get \( 6.3 \times 10^6 \).

Front

What is the expression for a number increased by a constant?

Back

The expression is \( x + c \), where \( x \) is the number and \( c \) is the constant.

Front

What is a coefficient in a polynomial?

Back

A coefficient is a numerical factor in a term of a polynomial, representing how many times the variable is multiplied.

Front

What is the difference between a term and a polynomial?

Back

A term is a single mathematical expression (like 3x or 5), while a polynomial is a sum of multiple terms (like 3x + 5y + 2).

Front

How do you identify like terms in an expression?

Back

Like terms are terms that have the same variable raised to the same power, differing only in their coefficients.

Front

What is the process of combining like terms?

Back

To combine like terms, add or subtract their coefficients while keeping the variable part the same.