Variables and Patterns 3.4

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 helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

Solve: 7 + (6 x 4 – 9) ÷ 3

Back

12

Front

What does the variable 'b' represent in the equation b = 100 – 6r?

Back

The variable 'b' represents the number of points left on a Wild World bonus card after 'r' rides.

Front

If r = 3 in the equation b = 100 – 6r, what is the value of b?

Back

82

Front

What is a variable in mathematics?

Back

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

Front

What is the equation for group admission price at Wild World?

Back

p = 50 + 10n, where 'p' is the price and 'n' is the number of people.

Front

If n = 11 in the equation p = 50 + 10n, what is the value of p?

Back

160

Front

If n = 23 in the equation p = 50 + 10n, what is the value of p?

Back

280

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with numbers and performing the operations.

Front

What is the difference between an equation and an expression?

Back

An equation is a mathematical statement that asserts the equality of two expressions, while an expression is a combination of numbers, variables, and operations without an equality sign.