This is a great review for basic decimal operations. Hang the posters around your room and have your students start at any problem (no traffic jams!) If they solve it correctly, they will find the answer on another poster. And if they can't find the answer, they need to go back and check over their work.
This is aligned with 6th grade common core standard NS.B.3
(Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.)
The problems address the areas that have posed difficulty for my students (for example, subtracting a number with more digits from one that has less 9 -2.731)