Question 1199708
.
When i {{{highlight(cross(divided))}}} <U>divide</U> 48 by the sum of 5 and a certain number,
the result is 3. What is the number ?
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It is a simple arithmetic problem.



To find the answer, &nbsp;move backward:


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- first divide &nbsp;48 &nbsp;by &nbsp;3 &nbsp;to get &nbsp;16;


&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- then subtract &nbsp;5 &nbsp;from &nbsp;16 &nbsp;to get &nbsp;11.



The number of &nbsp;11 &nbsp;is your &nbsp;&nbsp;<U>ANSWER</U>.



Doing this way, you do not need solving any equations.

You even do not need write them.



You even do not need to know what an equation is and how to solve them.



Hence, &nbsp;you can teach very young students solving such problems by the backward method, 

and such teaching will definitely develop their mind &nbsp;(!)