# Grade 2 Common Core Math Practice

The focus in Grade 2 is on the following four critical areas:

• Extending understanding of base-ten notation
• Building fluency with addition and subtraction
• Using standard units of measure
• Describing and analyzing shapes about attributes of, and composing and decomposing geometric shapes

### Overview of Grade 2 Standards

#### Operations and Algebraic Thinking

• Represent and solve problems involving addition and subtraction(2.OA.A.1)
• Add and subtract within 20 (2.OA.B.2)
• Work with equal groups of objects to gain foundations for multiplication(2.OA.C.3, 2.OA.C.4)

#### Number and Operations in Base Ten

• Understand place value (2.NBT.A.1, 2.NBT.A.1.A, 2.NBT.A.1.B, 2.NBT.A.2, 2.NBT.A.3, 2.NBT.A.4)
• Use place value understanding and properties of operations to add and subtract (2.NBT.B.5, 2.NBT.B.6, 2.NBT.B.7, 2.NBT.B.8, 2.NBT.B.9)

#### Measurement and Data

• Measure and estimate lengths in standard units(2.MD.A.1, 2.MD.A.2, 2.MD.A.3, 2.MD.A.4)
• Relate addition and subtraction to length (2.MD.B.5, 2.MD.B.6)
• Work with time and money (2.MD.C.7, 2.MD.C.8)
• Represent and interpret data(2.MD.D.9, 2.MD.D.10)

#### Geometry

• Reason with shapes and their attributes (2.G.A.1, 2.G.A.2, 2.G.A.3)

#### Mathematical Practices

• Make sense of problems and persevere in solving them
• Reason abstractly and quantitatively
• Construct viable arguments and critique the reasoning of others
• Model with mathematics
• Use appropriate tools strategically
• Attend to precision
• Look for and make use of structure
• Look for and express regularity in repeated reasoning