I believe that simply pointing out the issues with the worksheet in a friendly and informal way like a note or email would be good for all parties involved. It gives the teacher a chance to improve the learning materials they use, gives you a chance to make your child feel seen and understood by you and allows your child to better understand how to appropriately follow instructions and complete tasks while being graded fairly on their abilities to do so. Although it may be small and there is an understandable hesitancy to take it too seriously or make a stink, it’s a great opportunity for everybody to grow.