This math topic focuses on the skill of converting fractions to percentages, specifically emphasizing the relationship between percentages and equivalent fractions set to a denominator of 100. It practices using cross multiplication to find missing numerators or denominators in proportional relationships involving percentages, targeting initial percentages of 10%. Each problem requires identifying or comparing the percentage value corresponding to given ratios and fractions. The topic is designed as a basic introduction to understanding how percentages are equivalent to specific fractions out of 100.