KS2 Primary Maths Age 9-13 - BIDMAS: - Explained

The video tutorial explains how to solve the mathematical expression 3 + 5 * 2 - 4 using the order of operations, also known as BIDMAS (Brackets, Indices, Division, Multiplication, Addition, Subtraction). The instructor emphasizes the importance of following the correct order, starting with multiplication before addition and subtraction. The problem is solved step-by-step, resulting in the final answer of nine. The tutorial also highlights the marks allocation for the question, with one mark for the correct answer and another for understanding the order of operations. The video concludes with a reminder to always follow BIDMAS.

What is the first step in solving the expression 3 + 5 * 2 - 4 according to BIDMAS?

• Multiply 5 and 2

• Divide 10 by 2

• Add 3 and 5

• Subtract 4 from 3

After multiplying 5 by 2, what does the expression become?

• 3 + 10 - 4

• 3 + 5 - 4

• 3 * 10 - 4

• 3 + 5 * 4

What is the result of 3 + 10?

• 13

• 14

• 15

• 12

What is the final answer to the expression 3 + 5 * 2 - 4?

• 9

• 7

• 10

• 8

How many marks are awarded for knowing the order of operations in this question?

• One mark

• Two marks

• Three marks

• Four marks