LeapFrog Quantum Pad Grade 4 Math w/Cartridge - For LeapPad Learning Systems LeapFrog Quantum Pad Grade 4 Math w/Cartridge - For LeapPad Learning Systems General Features: Grade 4 Mathematics Double digit multiplication Long division Comparing fractions Adding and subtracting fractions Decimals Positive and negative numbers Line graphs Algebra Perimeter and area Geometry Angles and triangles Probability Mental math Cartridge included Regulatory Approvals: