Subtraction Within 3 app for iPhone and iPad


4.1 ( 4191 ratings )
Reference Education
Developer: Jeff Gardner
Free
Current version: 2.0, last update: 7 years ago
First release : 03 Jun 2015
App size: 16.8 Mb

Problems are all subtraction with the unknown answer in one of three positions in each equation. Drag the correct number block to the blank gray square to complete the equation. Numbers used are within 3. Buy the full version to use numbers within 10 and over 80 equations to solve.