Finding the whole number from a given percentage can be tricky. This is especially true for Year 7 students who are learning about fractions, decimals, and percentages.

Let’s break it down into simple steps:

1. Understand the Percentage: A percentage is just a fraction of a whole number. For example, if you know that 25% of a quantity is 50, this is where things can get complicated.

2. Convert the Percentage to Decimal: To make the math easier, we turn the percentage into a decimal. For 25%, you change it to $0.25$. A lot of students find this step hard, which can lead to mistakes.

3. Set Up the Equation: You can set up your equation like this: $0.25 \times \text{Whole} = 50$ Finding the whole from this point can be challenging, especially if you're not sure how to work with equations.

4. Solve for the Whole: To find the whole, you need to divide: $\text{Whole} = \frac{50}{0.25}$ This can be tough, and many students find division scary.

5. Final Calculation: When you do the calculation correctly, you'll find that the whole equals $200$. Without practice and a bit of patience, this process can lead to confusion and mistakes.

Remember, the key is to take your time, break it down step by step, and practice these ideas. You'll get the hang of it!