5.OA.1

Front

What is a numerical expression?

Back

A numerical expression is a number sentence that includes numbers and operations, such as addition, subtraction, multiplication, or division. Example: 3 + 4.

Front

What is the order of operations?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed in a mathematical expression. The order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Evaluate: 4 x {6 + [3 × 3 × (8 – 2)]}

Back

240

Front

Evaluate: 13 - 2 x 4

Back

5

Front

What operation should be performed first in 5÷(8−2)+6×4?

Back

Subtraction (8 - 2).

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing an equal sign. Example: 3 + 4 = 7.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents one or more numbers. Example: In the expression x + 2 = 5, x is a variable.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

Front

What is the result of 5 + 3 x 2?

Back

11 (because multiplication is performed before addition).

Front

What is the difference between an expression and an equation?

Back

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