Year 9 students can do better in algebra by using BODMAS/BIDMAS. This is a simple way to remember the order in which you should solve math problems.

BODMAS stands for:

• Brackets: Solve anything inside brackets first.
• Orders: This means powers (like 2 squared) and roots (like square roots).
• Division and Multiplication: Do these next, from left to right.
• Addition and Subtraction: Finally, solve these from left to right.

Using this order is important for getting the right answers in algebra.

Steps to Use BODMAS/BIDMAS:

1. Find Brackets First: Always start with anything inside brackets.

   For example, in the problem (3 + (2 \times 5)), you calculate (2 \times 5 = 10) first.

   Then, you solve (3 + 10 = 13).

2. Look for Orders: If there are any powers or roots, solve them next.

   In (2^3 + 4), first find (2^3 = 8).

   Then, you add: (8 + 4 = 12).

3. Do Division and Multiplication: These two operations are equal so do them as you find them from left to right.

   For example, in (8 \div 2 \times 4), start with (8 \div 2 = 4).

   Then, multiply: (4 \times 4 = 16).

4. Finish with Addition and Subtraction: Lastly, solve addition and subtraction from left to right.

   In (10 - 2 + 4), first do (10 - 2 = 8).

   Then, add: (8 + 4 = 12).

Practice Example:

Let’s try using BODMAS/BIDMAS with this problem:

$2 + 3 \times (4^2 - 6)$

1. Start with the bracket: (4^2 - 6 = 16 - 6 = 10).

2. Then, multiply: (3 \times 10 = 30).

3. Finally, add: (2 + 30 = 32).

By always using BODMAS/BIDMAS, students can improve their algebra skills and avoid mistakes!