2.A.2.1
Use objects and number lines to represent number sentences.
Khan Academy ResourcesAdd within 20Subtract within 20Subtract within 20 visuallyAdd and subtract on the number line word problemsAdd within 100 using a number lineAdd & subtract within 20Subtract on a number lineAdd within 20 visuallyAdd on a number lineSubtract within 100 using a number lineSubtract within 20 using a number lineAdding 7 + 6Adding 8 + 7Adding and subtracting on number lineSubtracting 14 - 6

1-on-1 AI tutoring aligned to 2.A.2.1. Instant help for students, real-time insights for teachers.
Used in classrooms by 100,000+ students at Baltimore County, Plano ISD, Deer Valley USD, KIPP, and districts nationwide.
Free for teachers, forever →