Practice sequences or patterns:

Example: Start with 5, double it, subtract 3, add 10… continue for 5 steps mentally.

4. Split & Conquer

Break big numbers into smaller parts to make calculations easier.

Example: 68 × 12 → 68 × 10 + 68 × 2 = 680 + 136 = 816

5. Daily Challenges

Challenge yourself with questions like:

What is 15% of 240?

Multiply 23 × 17 without writing it down.

Your brain strengthens just like a muscle—the more you exercise it, the sharper your memory, attention, and problem-solving skills become.