GCSE Secondary Maths Age 13-17 - Number: Calculator - Explained

The video tutorial guides students through solving a mathematical problem involving the calculation of a square root and division. It emphasizes the importance of breaking down the problem into steps: calculating the numerator and denominator separately before performing the division. The instructor warns against common mistakes, such as inputting the entire expression into a calculator without showing the method, which can result in losing marks. The tutorial stresses the importance of writing down all figures from the calculator display and showing the method to earn partial marks, even if the final answer is incorrect.

What is the first step recommended by the teacher when solving the given problem?

• Ignore the method and focus on the final answer.

• Round off the intermediate results.

• Calculate the numerator and denominator separately.

• Input the entire expression into the calculator at once.

What is the result of subtracting 1.5 from 13.4?

• 12.0

• 11.9

• 11.5

• 13.0

What is the square root of 11.9 as calculated in the video?

• 3.45

• 3.4

• 3.5

• 3.449

What is the result of squaring 6.86?

• 47.006

• 48.0596

• 46.0596

• 47.0596

Why is it important to show the method in this calculation exercise?

• To avoid using a calculator.

• To make the calculation faster.

• To earn marks even if the final answer is incorrect.

• To ensure the final answer is correct.