KS2 Primary Maths Age 9-13 - Ratio, Proportion and Algebra: Formulas and Expressions - Explained

The video tutorial addresses a math problem where X and Y are whole numbers less than 10, solving the equation X + 2Y = 20. It highlights common mistakes, such as using numbers 10 or greater, and demonstrates solving the equation with different values of X, starting with X=1, which doesn't work, and then successfully with X=2. The tutorial also presents other valid solutions, emphasizing the importance of adhering to the problem's constraints.

What are the conditions for the values of X and Y in the equation X + 2Y = 20?

Explain why using numbers 10 or more is incorrect in solving the equation.

Why is it important to ensure that Y is a whole number when solving the equation?

If X is equal to 2, what is the value of Y in the equation X + 2Y = 20?

List all pairs of (X, Y) that satisfy the equation X + 2Y = 20 with X and Y being whole numbers less than 10.