Scooby-Doo! a subtraction mystery2015
The Case of the Disappearing Doughnuts
by Mark Weakland
"The popular Scooby-Doo and the Mystery Inc. gang teach kids all about subtraction"--
— from OpenLibrary
3 editions at OpenLibrary
"The popular Scooby-Doo and the Mystery Inc. gang teach kids all about subtraction"--