Addition and Subtraction Ages 5, 6, 7 First Pencil Practice Book (Seimido Publishing) You can repeatedly practice addition and subtraction up to 10. With stickers. Recommended for children just starting to learn. Will be shipped via Mercari delivery, Nekopos. Waterproof packaging and will be sent in a bag. May change between Yu-Yu and Raku-Raku delivery services. Slightly worn corners, please check photo 6. No writing inside.