GCSE Secondary Maths Age 13-17 - Number: Types of Number and BODMAS - Explained

The video tutorial explains how to solve two math problems. In the first part, it demonstrates how to use three out of four given digits to form the largest possible three-digit number, resulting in 974. In the second part, it shows how to arrange four different digits to achieve the smallest possible sum, with the solution being 16 plus 28. The tutorial emphasizes strategic digit placement to achieve desired numerical outcomes.

What is the largest three-digit number you can form using the digits 7, 3, 4, and 9?

• 973

• 974

• 947

• 937

Which digit should be placed in the tens position to achieve the smallest sum using the digits 8, 2, 1, and 6?

• 2

• 8

• 6

• 1

What is the smallest sum you can achieve by arranging the digits 8, 2, 1, and 6?

• 12 + 68

• 18 + 26

• 21 + 68

• 16 + 28

Which of the following is an alternative arrangement of the digits 8, 2, 1, and 6 that results in the same smallest sum?

• 12 + 68

• 18 + 26

• 16 + 28

• 21 + 68

Why is it important to place the smallest digit in the tens position when arranging digits for the smallest sum?

• It increases the overall sum.

• It decreases the overall sum.

• It has no effect on the sum.

• It makes the sum equal to the largest possible number.