My simple book of addition for kids

"My simple book of addition " It is a very important book in the course of tyour kids, because it contains more than 450 operations with answers (see below).
A progressive workbook: simple exercises, then medium and then a little difficult.
Soon, I am happy to give you other editions and to audit the multiplication, the subtraction and the decimal numbers and ......
Please do not hesitate to encourage me to give you more.
infos :
Ink and Paper Type: Black & white interior
with white paper
Paperback cover finish: Matte
Trim Size: 8.5 x 11 in
Page Count: 100