# 1st Grade Online Math Videos

According to the Common Core Standards, in Grade 1, instructional time should focus on four critical areas: (1) developing understanding of addition, subtraction, and strategies for addition and subtraction within 20; (2) developing understanding of whole number relationships and place value, including grouping in tens and ones; (3) developing understanding of linear measurement and measuring lengths as iterating length units; and (4) reasoning about attributes of, and composing and decomposing geometric shapes.

If you know a particular Common Core Domain that you'd like to practice, you can drill down to it here.

### All 1st Grade Online Math Videos

This is a listing of all our 1st Grade Online Math Videos. Newest videos are on top!

Screenshot Name / Description Flag? Rating
Khan - Commutative and Associative Laws of Addition
Example using both the commutative and associative laws of addition (3:23)
Fun song teaching addition and subtraction (2:31)
2-digits Plus Tens
Students teach adding tens to 2-digit numbers
Khan - Addition tens and ones
Khan - Adding Multi-digit Whole Numbers
Adding larger number with tens and ones (1:32)
Basic addition and introduction to the number line (7:43)
Khan - Associative Law of Addition
Review the associative law of addition with Sal (2:10)
Khan - Commutative Law of Addition
Khan - Basic Subtraction
Introduction to subtraction first reviewing addition (8:32)
Khan - Basic Subtraction 2
Second part in the subtraction series from Sal (12:32)
Khan - Basic Subtraction 3
Part three in the subtraction series from Sal (18:26)