It is not clear what you are referring to when you mention “percentages for primary 5.” Percentages can be used in various contexts, such as mathematics, statistics, or even in relation to school grades.

If you are referring to the use of percentages in mathematics for primary 5 students, some common topics include:

1. Percentage as a fraction or decimal: Students learn to convert percentages to fractions or decimals and vice versa. For example, understanding that 50% is the same as 0.5 or 1/2.

2. Percentage increase or decrease: Students learn to calculate percentage increase or decrease in quantities. For example, finding a 20% increase in the price of an item.

3. Percentage of a quantity: Students learn to find a certain percentage of a given quantity. For example, finding 25% of 80.

These are just a few examples of how percentages are taught in primary 5 mathematics. It is important to note that the specific curriculum and topics covered may vary depending on the educational system or country.