The conversation between human and AI assistant.
What's a math trick that is not very well-known?
Wow, I've never heard of that before. Can you explain another one?
Of course! Another trick involves squaring two-digit numbers that end in 5. To do this, take the first digit of the number and multiply it by itself plus 1. Then, place 25 at the end of the result. For example, 35 x 35 = 1225.