Topic 8: Order of Operations and Algebra

Front

What is the Order of Operations?

Back

A set of rules that determines the correct sequence to evaluate a mathematical expression. The order is: Parentheses/Brackets/Braces, Multiplication/Division, Addition/Subtraction.

Front

What do Parentheses do in an expression?

Back

They indicate which operations should be performed first.

Front

What is the first step in the expression 10 - 4 ÷ 1 x 5?

Back

Division (4 ÷ 1) should be done first.

Front

What is the result of 12 - 4 x 2?

Back

4 (because you do multiplication first: 4 x 2 = 8, then 12 - 8 = 4).

Front

What operation do you perform first in 3 + 4 x 6 - 4?

Back

Multiplication (4 x 6) should be done first.

Front

What is the first operation in (12 + 10) ÷ 10 x 14 - 6?

Back

Addition (12 + 10) should be done first.

Front

What does Multiplication mean in math?

Back

It is an operation that combines groups of equal sizes. For example, 3 x 4 means 3 groups of 4.

Front

What is the result of 5 + 3 x 2?

Back

11 (because you do multiplication first: 3 x 2 = 6, then 5 + 6 = 11).

Front

What is the purpose of Brackets in an expression?

Back

They are used to group numbers or operations together, indicating that the operations inside should be performed first.

Front

What is the result of 8 ÷ 2 + 3?

Back

7 (because you do division first: 8 ÷ 2 = 4, then 4 + 3 = 7).