How to show working so markers can award marks
Layout habits that keep method marks even when the final answer is wrong.
The guide
One step per line. Aligning steps makes it possible for a marker to see that your method was right even if the arithmetic slipped.
Write the formula before you substitute numbers. "Area = l × b = 6 × 4 = 24 cm²" earns more than "24".
Keep units with every number that has one. Losing a unit is usually a lost mark, and writing it forces you to notice when the unit should change (for example cm² to m²).
Never erase an attempt. Cross it out lightly and continue. An erased useful step is gone forever; a crossed-out one can still be credited.
If you get stuck, write down what you know and what you are trying to find. A marker awards partial credit for a correct starting point far more often than students expect.