Kids Calculator

 
 

The best way to learn how to use the calculator is to try it. The pictures and captions below provide an overview.

 

Application Guide

Visualizer Bars:

+ , +

− , +

+ , −

∆%:  The Greek letter Delta is used to

            indicate a change.


∆%: From 2 to 3

    2 [∆%] 3 [∆=]

∆ = (3 - 2) = 1

∆% = 1 ÷ 2 = 50%


∆%: From 8 to 10

   8 [∆%] 10 [∆=]

∆ = (10 - 8) = 2

∆% = 2 ÷ 8 = 25%


∆%:  From 4 to 2

  4 [∆%] 2 [∆=]

∆ = (2 - 4) = -2

∆% = -2 ÷ 4 = -50%


∆%:  General Equation

  a [∆%] b [∆=]

∆ = (b - a)

∆% = (∆ ÷ a) × 100



Advanced:


Negative numbers:

e.g.    -4 - 8 =     0 [-] 4 [=] [-] 8 [=]    or    4 [-] [=] [=] [-] 8 [=]

         -4 - (-8) =   0 [-] 4 [=] [+] 8 [=]    or    4 [-] [=] [=] [+] 8 [=]