North Carolina Standard Course of Study: Grade 1
Skills available for North Carolina Grade 1 math standards
Section
Print skill plan
NC.1.OA
Operations and Algebraic Thinking
Represent and solve problems.
NC.1.OA.1 Represent and solve addition and subtraction word problems, within 20, with unknowns, by using objects, drawings, and equations with a symbol for the unknown number to represent the problem, when solving: Add to/Take from-Change Unknown, Put together/Take Apart-Addend Unknown, and Compare-Difference Unknown.
Addition word problems up to 10
Subtraction word problems up to 10
"Add to" and "take from" word problems up to 10
"Put together" and "take apart" word problems up to 10
Comparison word problems up to 10
Mixed operation word problems up to 10
Addition word problems up to 20
Subtraction word problems up to 20
"Add to" and "take from" word problems up to 20
"Put together" and "take apart" word problems up to 20
Comparison word problems up to 20
Mixed operation word problems up to 20
NC.1.OA.1 Represent and solve addition and subtraction word problems, within 20, with unknowns, by using objects, drawings, and equations with a symbol for the unknown number to represent the problem, when solving: Add to/Take from-Change Unknown, Put together/Take Apart-Addend Unknown, and Compare-Difference Unknown.
Addition word problems up to 10
Subtraction word problems up to 10
"Add to" and "take from" word problems up to 10
"Put together" and "take apart" word problems up to 10
Comparison word problems up to 10
Mixed operation word problems up to 10
Addition word problems up to 20
Subtraction word problems up to 20
"Add to" and "take from" word problems up to 20
"Put together" and "take apart" word problems up to 20
Comparison word problems up to 20
Mixed operation word problems up to 20
NC.1.OA.2 Represent and solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, by using objects, drawings, and equations with a symbol for the unknown number.
NC.1.OA.2 Represent and solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, by using objects, drawings, and equations with a symbol for the unknown number.
Understand and apply the properties of operations.
NC.1.OA.3 Apply the commutative and associative properties as strategies for solving addition problems.
NC.1.OA.3 Apply the commutative and associative properties as strategies for solving addition problems.
NC.1.OA.4 Solve an unknown-addend problem, within 20, by using addition strategies and/or changing it to a subtraction problem.
Understand subtraction up to 10
Understand subtraction up to 20
NC.1.OA.4 Solve an unknown-addend problem, within 20, by using addition strategies and/or changing it to a subtraction problem.
Understand subtraction up to 10
Understand subtraction up to 20
Add and subtract within 20.
NC.1.OA.9 Demonstrate fluency with addition and subtraction within 10.
Addition skill builders
Add within 10
Subtraction skill builders
Subtract within 10
Mixed operations
NC.1.OA.9 Demonstrate fluency with addition and subtraction within 10.
Addition skill builders
Add within 10
Subtraction skill builders
Subtract within 10
Mixed operations
NC.1.OA.6 Add and subtract, within 20, using strategies such as: counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction; using a number line; creating equivalent but simpler or known sums.
Add within 20
Subtract within 20
Addition strategies
Subtraction strategies
Relate addition and subtraction
Mixed operations
NC.1.OA.6 Add and subtract, within 20, using strategies such as: counting on; making ten; decomposing a number leading to a ten; using the relationship between addition and subtraction; using a number line; creating equivalent but simpler or known sums.
Add within 20
Subtract within 20
Addition strategies
Subtraction strategies
Relate addition and subtraction
Mixed operations
Analyze addition and subtraction equations within 20.
NC.1.OA.7 Apply understanding of the equal sign to determine if equations involving addition and subtraction are true.
Addition
Subtraction
Mixed operations
NC.1.OA.7 Apply understanding of the equal sign to determine if equations involving addition and subtraction are true.
Addition
Subtraction
Mixed operations
NC.1.OA.8 Determine the unknown whole number in an addition or subtraction equation involving three whole numbers.
Addition equations
Subtraction equations
Addition and subtraction equations
NC.1.OA.8 Determine the unknown whole number in an addition or subtraction equation involving three whole numbers.
Addition equations
Subtraction equations
Addition and subtraction equations
NC.1.NBT
Number and Operations in Base Ten
Extend and recognize patterns in the counting sequence.
NC.1.NBT.1 Count to 150, starting at any number less than 150.
NC.1.NBT.1 Count to 150, starting at any number less than 150.
NC.1.NBT.7 Read and write numerals, and represent a number of objects with a written numeral, to 100.
NC.1.NBT.7 Read and write numerals, and represent a number of objects with a written numeral, to 100.
Understand place value.
NC.1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones.
NC.1.NBT.2 Understand that the two digits of a two-digit number represent amounts of tens and ones.
NC.1.NBT.2.a: Unitize by making a ten from a collection of ten ones.
NC.1.NBT.2.a: Unitize by making a ten from a collection of ten ones.
NC.1.NBT.2.b: Model the numbers from 11 to 19 as composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
NC.1.NBT.2.b: Model the numbers from 11 to 19 as composed of a ten and one, two, three, four, five, six, seven, eight, or nine ones.
NC.1.NBT.2.c: Demonstrate that the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens, with 0 ones.
NC.1.NBT.2.c: Demonstrate that the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens, with 0 ones.
NC.1.NBT.3 Compare two two-digit numbers based on the value of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.
NC.1.NBT.3 Compare two two-digit numbers based on the value of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.
Use place value understanding and properties of operations.
NC.1.NBT.4 Using concrete models or drawings, strategies based on place value, properties of operations, and explaining the reasoning used, add, within 100, in the following situations: a two-digit number and a one-digit number; a two-digit number and a multiple of 10.
Regroup tens and ones
Add a two-digit number and one-digit number
Add a two-digit number and a multiple of ten
NC.1.NBT.4 Using concrete models or drawings, strategies based on place value, properties of operations, and explaining the reasoning used, add, within 100, in the following situations: a two-digit number and a one-digit number; a two-digit number and a multiple of 10.
Regroup tens and ones
Add a two-digit number and one-digit number
Add a two-digit number and a multiple of ten
NC.1.NBT.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
NC.1.NBT.5 Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
NC.1.NBT.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90, explaining the reasoning, using: concrete models and drawings; number lines; strategies based on place value; properties of operations; the relationship between addition and subtraction.
NC.1.NBT.6 Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90, explaining the reasoning, using: concrete models and drawings; number lines; strategies based on place value; properties of operations; the relationship between addition and subtraction.
NC.1.MD
Measurement and Data
Measure lengths.
NC.1.MD.1 Order three objects by length; compare the lengths of two objects indirectly by using a third object.
NC.1.MD.1 Order three objects by length; compare the lengths of two objects indirectly by using a third object.
NC.1.MD.2 Measure lengths with non-standard units.
NC.1.MD.2 Measure lengths with non-standard units.
NC.1.MD.2.a: Express the length of an object as a whole number of non-standard length units.
NC.1.MD.2.a: Express the length of an object as a whole number of non-standard length units.
NC.1.MD.2.b: Measure by laying multiple copies of a shorter object (the length unit) end to end (iterating) with no gaps or overlaps.
NC.1.MD.2.b: Measure by laying multiple copies of a shorter object (the length unit) end to end (iterating) with no gaps or overlaps.
Build understanding of time and money.
NC.1.MD.3 Tell and write time in hours and half-hours using analog and digital clocks.
NC.1.MD.3 Tell and write time in hours and half-hours using analog and digital clocks.
NC.1.MD.5 Identify quarters, dimes, and nickels and relate their values to pennies.
NC.1.MD.5 Identify quarters, dimes, and nickels and relate their values to pennies.
Represent and interpret data.
NC.1.MD.4 Organize, represent, and interpret data with up to three categories.
NC.1.MD.4 Organize, represent, and interpret data with up to three categories.
NC.1.MD.4.a: Ask and answer questions about the total number of data points.
Represent data
Interpret data
NC.1.MD.4.a: Ask and answer questions about the total number of data points.
Represent data
Interpret data
NC.1.MD.4.b: Ask and answer questions about how many in each category.
Represent data
Interpret data
NC.1.MD.4.b: Ask and answer questions about how many in each category.
Represent data
Interpret data
NC.1.MD.4.c: Ask and answer questions about how many more or less are in one category than in another.
Represent data
Interpret data
NC.1.MD.4.c: Ask and answer questions about how many more or less are in one category than in another.
Represent data
Interpret data
NC.1.G
Geometry
Reason with shapes and their attributes.
NC.1.G.1 Distinguish between defining and non-defining attributes and create shapes with defining attributes by:
NC.1.G.1 Distinguish between defining and non-defining attributes and create shapes with defining attributes by:
NC.1.G.1.a: Building and drawing triangles, rectangles, squares, trapezoids, hexagons, circles.
Identify shapes
Shape attributes
NC.1.G.1.a: Building and drawing triangles, rectangles, squares, trapezoids, hexagons, circles.
Identify shapes
Shape attributes
NC.1.G.1.b: Building cubes, rectangular prisms, cones, spheres, and cylinders.
NC.1.G.1.b: Building cubes, rectangular prisms, cones, spheres, and cylinders.
NC.1.G.2 Create composite shapes by:
NC.1.G.2 Create composite shapes by:
NC.1.G.2.a: Making a two-dimensional composite shape using rectangles, squares, trapezoids, triangles, and half-circles naming the components of the new shape.
NC.1.G.2.a: Making a two-dimensional composite shape using rectangles, squares, trapezoids, triangles, and half-circles naming the components of the new shape.
NC.1.G.2.b: Making a three-dimensional composite shape using cubes, rectangular prisms, cones, and cylinders, naming the components of the new shape.
NC.1.G.2.b: Making a three-dimensional composite shape using cubes, rectangular prisms, cones, and cylinders, naming the components of the new shape.
NC.1.G.3 Partition circles and rectangles into two and four equal shares.
NC.1.G.3 Partition circles and rectangles into two and four equal shares.
NC.1.G.3.a: Describe the shares as halves and fourths, as half of and fourth of.
NC.1.G.3.a: Describe the shares as halves and fourths, as half of and fourth of.
NC.1.G.3.b: Describe the whole as two of, or four of the shares.
NC.1.G.3.b: Describe the whole as two of, or four of the shares.
NC.1.G.3.c: Explain that decomposing into more equal shares creates smaller shares.
NC.1.G.3.c: Explain that decomposing into more equal shares creates smaller shares.