Algebra Pre-test

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. The acronym PEMDAS is often used: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by two or more terms inside a set of parentheses.

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How do you express a number in scientific notation?

Back

To express a number in scientific notation, write it as a product of a number between 1 and 10 and a power of 10. For example, 7120000 can be written as 7.12 x 10^6.

Front

What are parallel lines?

Back

Parallel lines are lines in a plane that never meet or intersect. They are always the same distance apart.

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What are like terms in algebra?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3a and 5a are like terms, while 3a and 4b are not.

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How do you combine like terms?

Back

To combine like terms, add or subtract the coefficients of the terms that have the same variable. For example, 3a + 5a = 8a.

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What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number in mathematical expressions or equations.

Front

What is an expression in algebra?

Back

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

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equality sign and cannot be solved, while an equation has an equality sign and can be solved for a variable.

Front

What is the purpose of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression, following the order of operations.