You may want to check these links for options:
http://www.the-best-childrens-books.org/math-for-kids.html
http://www.whatdowedoallday.com/2015/01/math-books-for-babies-and-toddlers.html
Ten Little Fingers and Ten Little Toes by Mem Fox sounds like a great read! Saw it here:
https://ph.theasianparent.com/heartwarming-books-that-children-should-read/
I remember reading The Very Hungry Caterpillar by Eric Carle. Kids really seem to enjoy it :)