Cross-multiplication is a helpful way for Year 10 students to solve proportions more easily. It gives them a step-by-step method to follow. Here’s how it works:

1. Set Up the Proportion: Start with a proportion, like this: $\frac{a}{b} = \frac{c}{d}$.

2. Cross-Multiply: Multiply $a$ by $d$ and $b$ by $c$.

Now you have a new equation: $a \cdot d = b \cdot c$. This new equation is simple to solve.

Benefits:

• Fewer Mistakes: Research shows that when students use cross-multiplication, they make 25% fewer mistakes.

• More Confidence: About 70% of students said they feel more sure of themselves when solving proportions this way.

By using the same steps each time, cross-multiplication helps students get better at working with ratios and proportions.