All we have to do is count in the shaded parts for each grid. For example, the first grid has 43 squares shaded in. This 43 is out of a total of 100 total squares, making the fraction 43/100. The decimal form is just putting 43 and moving the decimal pount two places to the left (0.43) and the percent would be our original number with a percent sign next to it (43%).
Answers:
1) 0.43 and 43%
2)0.08 and 8%
3) 0.52 and 52%
(The rest are cut off)