Puzzle 1 is a regular 100s chart, the first row at the top begins with 1 on the left and ends with 10 on the right. It goes from 1 to 100.
When I started doing Puzzle 2, I looked at all the pieces first and noticed that the pieces would fit only if the chart began with 0. So, 10 would have to go in the second row right below 0. I put everything that has 0 in the ones place on the left side of the chart instead of the right. Now every number is 10 numbers apart from the number above it or below it.
I also noticed that this chart goes from 0 to 99 instead of 1 to 100.
For Puzzle 3, if I begin the chart with 1 on the left of the top row, the puzzle pieces did not fit in the square. I tried putting the puzzle pieces in different ways but none seemed to work. Then, I tried to put 1 at the very bottom of the square. Then, all the digits 1 through 9 would be in the same row. This was the reverse of the regular 100s chart but like the regular chart, the first column all had 1 in the ones place, the second column has 2 in the ones place and so on.
Puzzle 4 was like Puzzle 2 because it goes from 0 to 99. It was also a little like Puzzle 3 because it was a reversed – it starts with 0 in the very bottom row instead of the top row.