Math App

Hi,

I have to code an app like this for android. Where an equation gets generated and the user has to pick/touch one of three answers below.

Couple of questions:

When I generate the equation, I guess I create a method for Addition and one for Subtraction where I can have an array of 0-9 for the first number and same for the second number.

Then have a sum = number1 + number 2 or -

Then randomly generate 2 numbers for the answers and the sum as the 3rd one.

Any thoughts on where I begin?

Thanks!
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