Common Core Standards

Grade: 
1st Grade 
Standard: 
CC.2.1.1.B.3 
Description: 
Use placevalue concepts and properties of operations to add and subtract within 100. 
Standard: 
MA.1.NSO.2.2 
Description: 
Add two whole numbers with sums from 0 to 20, and subtract using related facts with procedural reliability. 
Standard: 
1.NBT.C.5 
Description: 
Given a twodigit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used. 
Standard: 
1.5.C 
Description: 
use relationships to determine the number that is 10 more and 10 less than a given
number up to 120; 
