"Why should the reader care?" I agree, they aren't framed in a way that engages the reader. How about for a division problem, start with a bag of candy, or if

"Why should the reader care?" I agree, they aren't framed in a way that engages the reader. How about for a division problem, start with a bag of candy, or if it HAS to be healthy, a bag of cherries. Or maybe apply it to cooking. Lets use Metric anyway, even after ( https://en.wikipedia.org/wiki/Metrication_in_the_United_States#20th_century https://en.wikipedia.org/wiki/Metrication_in_the_United_Stat... ) and ask questions about a recipe for some food dishes (use real ones! IDK maybe bread, pasta, some pastry stuff...) and ask things like the total expected volume based on the ingredients. How much X there should be if naively adjusted by exactly a factor of 1/2 or 3x etc. Things people might do if a thing was intended for a family of 4 rather than 2, or a group of guests at a holiday.