Grade 2 Math (North Carolina SCOS)

Operations and Algebraic Thinking (OA)

• Represent and solve problems involving addition and subtraction
• NC.2.OA.1 Solve one- and two-step addition and subtraction word problems within 100 with unknowns in all positions.
• Add and subtract within 20
• NC.2.OA.2 Add and subtract fluently within 20 using mental strategies.
• Work with equal groups of objects
• NC.2.OA.3 Decide whether a group of up to 20 objects has an odd or even number of members.
• NC.2.OA.4 Use addition to find the total in rectangular arrays up to 5 by 5 and write equal-addend equations.

Number and Operations in Base Ten (NBT)

• Understand place value
• NC.2.NBT.1 Understand three-digit numbers as hundreds, tens, and ones and compose and decompose them.
• NC.2.NBT.2 Count within 1000 and skip-count by 5s, 10s, and 100s.
• NC.2.NBT.3 Read and write numbers within 1000 as numerals, number names, and expanded form.
• NC.2.NBT.4 Compare three-digit numbers using hundreds, tens, and ones and record with >, =, and <.
• Use place value understanding and properties of operations to add and subtract
• NC.2.NBT.5 Add and subtract fluently within 100 using place value, properties, and efficient strategies.
• NC.2.NBT.6 Add up to three two-digit numbers using place value strategies and properties of operations.
• NC.2.NBT.7 Add and subtract within 1000, relating strategies to written methods.
• NC.2.NBT.8 Mentally add or subtract 10 or 100 to or from a number between 100 and 900.

Measurement and Data (MD)

• Measure and estimate lengths in standard units
• NC.2.MD.1 Measure lengths in standard units with tools such as rulers and tape measures.
• NC.2.MD.2 Measure an object with two different units and explain how the unit affects the measurement.
• NC.2.MD.3 Estimate lengths in inches, feet, yards, centimeters, and meters.
• NC.2.MD.4 Measure to find how much longer one object is than another in a standard unit.
• Relate addition and subtraction to length
• NC.2.MD.5 Solve length word problems within 100 using addition, subtraction, and equations with like units.
• NC.2.MD.6 Represent whole numbers and their sums and differences within 100 on an equally spaced number line.
• Build understanding of time and money
• NC.2.MD.7 Tell and write time to the nearest five minutes using a.m. and p.m.
• NC.2.MD.8 Solve word problems with coins within 99 cents and with whole dollar amounts, using correct symbols.
• Represent and interpret data
• NC.2.MD.10 Organize, represent, and interpret data with up to four categories using picture and bar graphs.

Geometry (G)

• Reason with shapes and their attributes
• NC.2.G.1 Recognize and draw triangles, quadrilaterals, pentagons, and hexagons with given attributes; describe prisms and cubes.
• NC.2.G.3 Partition circles and rectangles into two, three, or four equal shares described with fraction words.