This is a set of 24 task cards designed to give kids practice using a proportion to solve problems involving a variety of rates. Each rate is presented on 2 cards with each giving a different approach to the rate.
I teach above level 5th grade math, and I created a set of task cards in a separate listing that I used with my students first. I realized that the kids were having trouble with problems that involved halves (either in the ratio, or involving a rate that isn't a multiple of the number presented in the question). I designed this set specifically to give kids practice with halves and some trickier rates to interpret.
I made several copies of the cards (I printed this set at half-size) and had the kids work with partners to solve the questions. There were definitely a few challenging cards. I walked around and sat with different teams to talk through some of the problems as they worked. I was impressed with the level of mathematical discussion the cards brought out in kids.
This is an 8-page PDF file that consists of 6 pages of task cards (4 per page), a 1-page recording sheet with partially completed proportions, and a 1-page answer key.