KS2 Primary Maths Age 9-13 - Calculations: Order of Operations - Explained

The video tutorial explains a math problem involving the expression 9^2 - 36 / 9. Many students got it wrong due to misunderstanding the order of operations, also known as BIDMAS. The instructor breaks down the problem, first addressing indices by calculating 9 squared as 81, then performing division before subtraction. The correct answer is 77, highlighting the importance of following BIDMAS. The tutorial emphasizes the need to adhere to the order of operations to solve such problems correctly.

What is the first step in solving the expression 9^2 - 36 / 9 using BIDMAS?

• Subtract 36 from 9

• Add 9 and 36

• Calculate 9 squared

• Perform the division 36 / 9

After calculating 9 squared, what is the next operation according to BIDMAS?

• Subtraction

• Multiplication

• Division

• Addition

What is the result of the division 36 / 9?

• 5

• 6

• 3

• 4

What is the final result of the expression 9^2 - 36 / 9?

• 73

• 85

• 81

• 77

Why is it important to follow the order of operations in mathematical expressions?

• To ensure the correct result

• To avoid using a calculator

• To get a higher score

• To make calculations faster