This math topic involves practicing calculations related to equivalent ratios, specifically within the context of ingredient mixtures and recipe expansions involving whole numbers. Learners practice determining the required quantities of one ingredient when given the quantity of another, adhering to predefined ratios. Questions range from adjusting quantities in food recipes to determining proportions in paint mixtures, enhancing skills in applying ratios in practical scenarios. The problems are structured to develop and test the ability to maintain proportionality across different contexts and amounts.