Show how to calculate mentally and indicate the properties used

Show how to calculate mentally and indicate the properties used

15% of 260

Re: Show how to calculate mentally and indicate the properties used

Quote:

Originally Posted by

**maddiexoxo** Show how to calculate mentally and indicate the properties used

15% of 260

@maddiexoxo, you have posted a number of posts. Each of then seem to say "Do this for me".

Is that a command? If it is then you are sadly misinformed.

This is not a homework service. You can pay for that.

This is a free help service. But we cannot help is you only post the question.

Re: Show how to calculate mentally and indicate the properties used

Hello, maddiexoxo!

Quote:

Show how to calculate mentally and indicate the properties used: .$\displaystyle 15\%\text{ of }260$

$\displaystyle \begin{array}{cccccc}\text{We know:} & 10\%\text{ of }260 &=& 26 && \frac{1}{10}\text{ of }260 \\ \\[-3mm] \text{Then:} & 5\%\text{of }260 &=& 13 && \text{half of }10\% \\ \\[-3mm] \text{Hence:} & 15\%\text{ of }260 &=& 39 && \text{addition} \end{array}$