give me an example of quick maths
2+2 = 4
u, mr oobleck are an absolute genius
i have to stan
Sure! Here's an example of quick maths:
Let's say you want to calculate the square of 17.
To do this mentally, you can follow these steps:
1. Start by thinking about the closest multiple of 10 to 17, which is 20.
2. Calculate the difference between 20 and 17, which is 3.
3. Square the difference by multiplying 3 with itself, giving you 9.
4. Add the result from step 3 to the multiple of 10 squared, which is 20 squared, or 400.
5. The final result is 400 + 9, which equals 409.
So, the square of 17 is 409.