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First, figure out what the 1 would be, so you can fill in the first column. Write down what you think 2 will be, so you can keep track. Then, figure out what all the other numbers would be. If you're not sure, try it out. See if the symbol works for the number you are trying out.

I thought about the ones places and the tens place. When I figured what the big diamond represents, I knew where the ones would go on the other numbers like 11, 21, and 31. Also check to see if it will fit on the 100 chart. Then, once you think you're all done, recheck your work and make sure that it makes sense.