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

The video tutorial explains how to calculate the angles of a triangle given in a ratio of 1:2:3. It starts by reminding that the sum of angles in a triangle is 180 degrees. The problem is solved by dividing 180 by the sum of the ratio parts, which is 6, to find the value of one share. Each angle is then calculated by multiplying the share value by the respective ratio part. The final angles are 30, 60, and 90 degrees. The video also discusses the allocation of marks for solving the problem.

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