Maths Problem Solving Strategies - Working Backwards

Introduction to Working Backwards00:00:00

Introduction to the 'working backwards' strategy, demonstrated through an algebraic riddle where the final result is known and the initial number must be determined by reversing each operation.

Step-by-Step Calculation00:00:24

A detailed walk-through of the calculation process, applying the inverse of every mathematical operation—starting from the result (2) and multiplying by 7, adding 4, dividing by 2, and subtracting 3 to arrive at the solution, 6.

Application: Unitary Method00:01:32

The application of the strategy to a real-world distance problem. By identifying that 2/3 of a journey equals 6 km, we determine the full distance (3/3) is 9 km using the unitary method.