A free program for Android, by Visual Math Interactive.

Get ready for your child’s third grade math exams with 3rd Grade Math: Fun Kids Games! 3rd Grade Math: Fun Kids Games offers hours of educational games and videos designed to change the way your third grader thinks about learning common core math. It offers lessons and activities in the following areas:

Multiplication and division

Fractions and decimals

Measurement and units of measurement

Arithmetic

Relationship between place values and arithmetic

Fractions and their meaning

Measurement problems involving time, liquid volume, and mass, area, and perimeter

Reasons with shapes and their attributes

Learning is a fun and rewarding experience for children.