What is 21% of 41? I think it is 10 but I'm not for sure.

It is actually 8.4, but you were really close! Only 1.6 away!

But we don't post to use a calculator. It says to estimate.

Oh, ok. In that case, you would be right. And I didn't use a calender. I used my head, my own personal calculator.

To find 21% of 41, you can follow these steps:

Step 1: Convert the percentage to a decimal. To do this, divide the percentage by 100. In this case, divide 21 by 100:

21 รท 100 = 0.21

Step 2: Multiply the decimal value by the number you want to find the percentage of. In this case, multiply 0.21 by 41:

0.21 x 41 = 8.61

Therefore, 21% of 41 is approximately 8.61, not 10.