. Grade 6, Illustrative icon

Which detergent is a better buy?

Illustrative MathematicsVaries

This purpose of this task is to provide a context for comparing ratios. Many techniques can be used including making a ratio table, finding unit rates, and carefully selecting equivalent ratios which can be compared directly. The numbers selected for the task statement make it well suited for the 6th grade. If students make all of their calculations by hand then they will build skill related to the standard 6.NS.3, ' Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.'

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