This one page worksheet is very visual in nature, as to appeal to different types of learners. It covers decomposing, or breaking apart, numbers two through ten. It is ideal for advanced Kindergarteners, as well as on-level 1st and 2nd graders as independent work. Perhaps for developing students, I would go over it with them or cover up the other sums to only show one total at a time. The written equations could be left off for certain students in a special education classroom or students with dysgraphia or similar.
Most students get practice with their addition and subtraction facts, but working this way is almost like working backwards or solving a number puzzle. In that sense, it may be hard for some students to come up with all the different decompositions. However, students will need to have mastered decomposition in order to use number sense strategies, such as going through tens. For example, some material suggests to break apart 5 to solve 38+5, as 38+2+3=40+3=43.