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1st grade

Place value

Numbers 0 to 120: Place valueOnes and tens: Place valueComparing 2-digit numbers: Place value

Addition and subtraction

Relate addition and subtraction: Addition and subtractionAddition within 20: Addition and subtractionSubtraction within 20: Addition and subtractionEqual sign: Addition and subtraction
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

Measurement, data, and geometry

Length and size: Measurement, data, and geometryBar graphs: Measurement, data, and geometryTime: Measurement, data, and geometry
Shapes: Measurement, data, and geometryFractions of shapes: Measurement, data, and geometry

Course challenge

Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.

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Numbers 0 to 120

Learn the numbers from 0 to 120.
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Community questions
Mission