Question

Kelly made one batch of 1,425g of peanut and pretzel mix. How many grams does she need to add to the snack mix to make 2 kilograms

Answer 1

Basically, 

2 kg = 2,000 g

So all you need to do is

   2,000
-  1,425
-----------
       575

There's your answer!

575 grams

Hope that helps and correct me if I'm wrong!