XtraMath is a free program that helps students master addition, subtraction, multiplication, and division facts. Free, Proven and Trusted Online K-6 Tutoring.
Numbers 0 to 120: Place valueOnes and tens: Place valueComparing 2-digit numbers: Place value
Relate addition and subtraction: Addition and subtractionAddition within 20: Addition and subtractionSubtraction within 20: Addition and subtractionEqual sign: Addition and subtraction
Free First Grade Math Practice
Missing number within 20: Addition and subtractionWord problems within 20: Addition and subtractionWord problems with 'more' and 'fewer': Addition and subtractionAdding 1s and 10s: Addition and subtractionIntro to addition with 2-digit numbers: Addition and subtraction
Length and size: Measurement, data, and geometryBar graphs: Measurement, data, and geometryTime: Measurement, data, and geometry
First Grade Practice Math
Shapes: Measurement, data, and geometryFractions of shapes: Measurement, data, and geometry