In Year 7 Math, it’s really important to know the difference between an expression and an equation.

What are They?

• Expression: This is a mix of numbers, letters (called variables), and math signs like +, -, ×, and ÷. It does not have an equals sign. For example, $3x + 5$ is an expression.
• Equation: This is a mathematical statement that shows two expressions are equal. It always has an equals sign. For example, $3x + 5 = 11$ is an equation.

Main Differences:

1. Structure:

   • Expression: Doesn’t have an equals sign.
   • Equation: Has an equals sign.

2. Purpose:

   • Expression: Represents a value or a calculation.
   • Equation: Shows a connection that can be solved to find unknown numbers.

Example:

• Expression: $2y - 4$
• Equation: $2y - 4 = 0$

Why is This Important?

In Year 7, around 65% of students find it hard to tell these two apart. Getting a good handle on this can help improve problem-solving skills and understanding of algebra. These skills are really important for advanced math later on.