Answer to Question #199489 in Algebra for Phumzile Zondi

Question

Use the Method of compensation to show how you can make the subtraction of 563 -79 easier

Answer 1

Subtraction by compensation means taking away more than you need and then adding some back. It can be quite an effective way to subtract.

Now:

$\Rightarrow$ $563-79$

$\Rightarrow$ $563-100+21$ (break -79=-100+21,as it is easy to subtract 100. )

It can easily be:

$\Rightarrow$ $463+21$

$\Rightarrow463+20+1=484$

484 is the real answer ,which we have determine so easily by the help of compensation method.