Common Core Math K-5: 1.OA.B.4
CodeHS Lessons
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
This standard does not have any mappings to our lessons yet.
Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.
This standard does not have any mappings to our lessons yet.
