Standards

CCSS.Math.Content.3.NBT.A

Use place value understanding and properties of operations to perform multi-digit arithmetic.

Number and Operations in Base Ten

Common Core State Standards (CCSS) Initiative: Mathematics Standards

CCSS.Math.Content.3.NBT.A.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.