Bellwork 12/18

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

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by performing the operations in the correct order.

Front

What is a mathematical expression?

Back

A mathematical expression is a combination of numbers, variables, and operators (such as +, -, ×, ÷) that represents a value.

Front

What is the value of the expression 3 [4 + 2 (7 – 2)]?

Back

42

Front

How many days are there in January, February, March, April, and May?

Back

January has 31 days, February has 28 days (29 in a leap year), March has 31 days, April has 30 days, and May has 31 days.

Front

What is the value of the expression 5 [3 + 4 (6 – 1)]?

Back

115

Front

What is the purpose of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.

Front

What is the result of the expression after the first step is performed? (8 × 3) - (5 + 2) + 9

Back

24 - 7 + 9

Front

What is the value of the expression 30 + 3(31) + 28?

Back

151

Front

What is the equation to find a missing number? (11 + 4) + 3 = ([?] + 6) + 2

Back

10