If you want a book about math, you need to find Arithmechicks Add Up: A Math Story and Arithmechicks Take Away: A Math Story. Now, these are not just your “one plus one” or “two minus one” stories. A lot is going on allowing them to be fairly busy. Therefore, while the format and the images are for the younger group, the older (up to first grade, maybe low second) can read as well. There is much to the text and some concepts (which are explained at the end of each book) might not be what you are familiar with at first glance.
In Add Up, the ten chicks go off to the park, where they add and play. They will even make a new friend. Then Ann Marie Stephens has Take Away where the chickens are having a sleepover with their new friend, are playing hide and seek and doing subtraction. Everything flows mostly smoothly in both books, but sometimes the math aspect makes you stop. Which is good, as then you can concentrate on the math.
Jia Liu has lighthearted illustrations. The covers show what to expect, chicks that are similar to each other with the slight differences to help you tell them apart when counting. Both stories have the new friend, a mouse, hiding on each page (in Add Up because they are shy and in Take Away because they are hiding during hide and seek). Both titles are fun, but not necessarily something you will think as “the best book ever.” Yet, in the right hands/classroom, it will work.