IXL Math - North Carolina second-grade math standards

IXL Math

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North Carolina

Skills available for North Carolina second-grade math standards

North Carolina math standards: 2008 North Carolina Standard Course of Study (Grades K-5)

North Carolina math standards: 2003 North Carolina Standard Course of Study (Grades K-6)

Standards are in black and IXL math skills are in blue. Hold your mouse over the name of a skill to view a sample problem. Click on the name of a skill to practice that skill.

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2.NO Number and Operations

2.1 The learner will read, write, model, and compute with whole numbers through 999.
2.1.01 Develop number sense for whole numbers through 999.
2.1.01.a Connect model, number word, and number using a variety of representations.
- Counting and number patterns: Number lines - up to 100 (Second grade - A.4)
- Counting and number patterns: Skip-counting stories (Second grade - A.9)
- Counting and number patterns: Skip-counting puzzles (Second grade - A.10)
- Counting and number patterns: Number lines - up to 1,000 (Second grade - A.11)
- Counting and number patterns: Counting patterns - up to 1,000 (Second grade - A.12)
- Names of numbers: Ordinal numbers up to 10th (Second grade - C.1)
- Names of numbers: Ordinal numbers up to 100th (Second grade - C.2)
- Names of numbers: Distinguishing ordinal and cardinal numbers (Second grade - C.5)
2.1.01.b Read and write numbers.
- Comparing and ordering: Greatest and least - word problems - up to 100 (Second grade - B.6)
- Comparing and ordering: Greatest and least - word problems - up to 1,000 (Second grade - B.7)
- Names of numbers: Writing numbers up to 100 in words (Second grade - C.3)
- Names of numbers: Writing numbers up to 1,000 in words (Second grade - C.4)
2.1.01.c Compare and order.
- Comparing and ordering: Comparing numbers up to 100 (Second grade - B.1)
- Comparing and ordering: Inequalities with addition and subtraction - up to 100 (Second grade - B.2)
- Comparing and ordering: Comparing numbers up to 1,000 (Second grade - B.3)
- Comparing and ordering: Put numbers up to 100 in order (Second grade - B.4)
- Comparing and ordering: Put numbers up to 1,000 in order (Second grade - B.5)
2.1.01.d Rename.
- Names of numbers: Roman numerals I, V, X, L (Second grade - C.6)
2.1.01.e Estimate.
- Estimation and rounding: Estimate to the nearest ten (Second grade - N.1)
- Estimation and rounding: Round to the nearest ten (Second grade - N.2)
- Estimation and rounding: Round to the nearest ten or hundred (Second grade - N.3)
- Estimation and rounding: Round to the nearest ten, hundred, or thousand (Second grade - N.4)
2.1.01.f Use a variety of models to build understanding of place value (ones, tens, hundreds).
- Counting and number patterns: Hundreds chart (Second grade - A.5)
- Place values: Place-value models - tens and ones (Second grade - M.1)
- Place values: Place-value models - up to hundreds (Second grade - M.2)
- Place values: Place-value models - up to thousands (Second grade - M.3)
- Place values: Value of underlined digit - tens and ones (Second grade - M.4)
- Place values: Value of underlined digit - up to hundreds (Second grade - M.5)
- Place values: Value of underlined digit - up to thousands (Second grade - M.6)
- Place values: Regrouping tens and ones I (Second grade - M.7)
- Place values: Regrouping tens and ones II (Second grade - M.8)
- Place values: Convert to/from a number - tens and ones (Second grade - M.9)
- Place values: Convert to/from a number - up to hundreds (Second grade - M.10)
- Place values: Convert to/from a number - up to thousands (Second grade - M.11)
- Place values: Convert between place values - up to thousands (Second grade - M.12)
- Place values: Convert from expanded form - up to hundreds (Second grade - M.13)
- Place values: Convert from expanded form - up to thousands (Second grade - M.14)
- Place values: Identify the digit in the ones, tens, hundreds, or thousands place (Second grade - M.15)
2.1.02 Use area or region models and set models of fractions to explore part-whole relationships in contexts.
2.1.02.a Represent fractions (halves, thirds, fourths) concretely and symbolically.
- Fractions: Halves, thirds, and fourths (First grade - I.1)
- Fractions: Equal parts (First grade - I.2)
- Fractions: Simple fractions: what fraction does the shape show? (First grade - I.3)
- Fractions: Simple fractions: parts of a group (First grade - I.4)
- Fractions: Fractions - word problems (First grade - I.5)
- Fractions: Simple fractions: which shape matches the fraction? (First grade - I.7)
- Fractions: Identify the fraction (Second grade - U.1)
2.1.02.b Compare fractions (halves, thirds, fourths) using models.
- Fractions: Compare fractions (First grade - I.6)
- Fractions: Compare fractions (Second grade - U.5)
- Fractions: Order fractions (Second grade - U.6)
2.1.02.c Make different representations of the same fraction.
- Fractions: Which shape illustrates the fraction? (Second grade - U.2)
2.1.02.d Combine fractions to describe parts of a whole.
2.1.03 Create, model, and solve problems that involve addition, subtraction, equal grouping, and division into halves, thirds, and fourths (record in fraction form).
- Addition - one digit: Input/output tables - sums to 20 (Second grade - E.7)
- Addition - one digit: Balance equations (Second grade - E.12)
- Addition - one digit: Add three or more numbers - word problems (Second grade - E.14)
- Subtraction - one digit: Input/output tables (Second grade - F.7)
- Subtraction - one digit: Balance equations (Second grade - F.12)
- Addition - two digits: Input/output tables (Second grade - G.5)
- Addition - two digits: Balance equations (Second grade - G.10)
- Subtraction - two digits: Input/output tables (Second grade - H.5)
- Subtraction - two digits: Balance equations (Second grade - H.10)
- Addition - three digits: Input/output tables (Second grade - I.3)
- Addition - three digits: Balance equations (Second grade - I.7)
- Subtraction - three digits: Input/output tables (Second grade - J.3)
- Subtraction - three digits: Balance equations (Second grade - J.7)
- Mixed operations: Addition and subtraction - balance equations - up to 20 (Second grade - L.2)
- Mixed operations: Input/output tables - write the rule - up to 20 (Second grade - L.3)
- Mixed operations: Addition and subtraction - balance equations - up to 100 (Second grade - L.5)
- Mixed operations: Input/output tables - write the rule - up to 100 (Second grade - L.6)
- Fractions: Parts of a group (Second grade - U.3)
- Fractions: Word problems (Second grade - U.4)
2.1.04 Develop fluency with multi-digit addition and subtraction through 999 using multiple strategies.
2.1.04.a Strategies for adding and subtracting numbers.
- Addition - one digit: Review - add one-digit numbers - sums to 10 (Second grade - E.1)
- Addition - one digit: Add one-digit numbers (Second grade - E.4)
- Addition - one digit: Addition with pictures - sums to 20 (Second grade - E.5)
- Addition - one digit: Add zero (Second grade - E.8)
- Addition - one digit: Add three or more numbers (Second grade - E.13)
- Subtraction - one digit: Review - subtract one-digit numbers - up to 10 (Second grade - F.1)
- Subtraction - one digit: Subtract a one-digit number from a two-digit number up to 18 (Second grade - F.4)
- Subtraction - one digit: Subtraction with pictures (Second grade - F.5)
- Subtraction - one digit: Subtract zero/all (Second grade - F.8)
- Addition - two digits: Add a two-digit and a one-digit number (Second grade - G.2)
- Addition - two digits: Add two two-digit numbers (Second grade - G.3)
- Addition - two digits: Add three or more numbers (Second grade - G.11)
- Subtraction - two digits: Subtract a one-digit number from a two-digit number (Second grade - H.2)
- Subtraction - two digits: Subtract two two-digit numbers (Second grade - H.3)
- Addition - three digits: Add multiples of 100 (Second grade - I.1)
- Addition - three digits: Add two three-digit numbers (Second grade - I.2)
- Subtraction - three digits: Subtract multiples of 100 (Second grade - J.1)
- Subtraction - three digits: Subtract three-digit numbers (Second grade - J.2)
- Properties: Related addition facts (Second grade - K.1)
- Properties: Related subtraction facts (Second grade - K.2)
- Properties: Solve inequalities using addition and subtraction shortcuts (Second grade - K.5)
2.1.04.b Estimation of sums and differences in appropriate situations.
- Estimation and rounding: Estimate sums (Second grade - N.5)
2.1.04.c Relationships between operations.
- Properties: Fact families (Second grade - K.3)
2.1.05 Create and solve problems using strategies such as modeling, composing and decomposing quantities, using doubles, and making tens and hundreds.
- Addition - one digit: Review - ways to make a number - sums to 10 (Second grade - E.2)
- Addition - one digit: Word problems (Second grade - E.9)
- Addition - one digit: Complete the addition sentence (Second grade - E.10)
- Subtraction - one digit: Review - ways to subtract - up to 10 (Second grade - F.2)
- Subtraction - one digit: Word problems (Second grade - F.9)
- Subtraction - one digit: Complete the subtraction sentence (Second grade - F.10)
- Addition - two digits: Add multiples of 10 (Second grade - G.1)
- Addition - two digits: Ways to make a number (Second grade - G.6)
- Addition - two digits: Word problems (Second grade - G.7)
- Addition - two digits: Complete the addition sentence (Second grade - G.8)
- Addition - two digits: Add three or more numbers - word problems (Second grade - G.12)
- Subtraction - two digits: Subtract multiples of 10 (Second grade - H.1)
- Subtraction - two digits: Ways to make a number (Second grade - H.6)
- Subtraction - two digits: Word problems (Second grade - H.7)
- Subtraction - two digits: Complete the subtraction sentence (Second grade - H.8)
- Addition - three digits: Word problems (Second grade - I.4)
- Addition - three digits: Complete the addition sentence (Second grade - I.5)
- Subtraction - three digits: Word problems (Second grade - J.4)
- Subtraction - three digits: Complete the subtraction sentence (Second grade - J.5)
- Mixed operations: Addition and subtraction - ways to make a number - up to 20 (Second grade - L.1)
- Mixed operations: Addition and subtraction - ways to make a number - up to 100 (Second grade - L.4)
- Logical reasoning: Guess the number (Second grade - O.1)
2.1.06 Define and recognize odd and even numbers.
- Counting and number patterns: Identifying even and odd numbers (First grade - A.11)
- Counting and number patterns: Which even or odd number comes before or after? (First grade - A.12)
- Counting and number patterns: Even or odd I (Second grade - A.6)
- Counting and number patterns: Even or odd II (Second grade - A.7)
- Counting and number patterns: Which even or odd number comes before or after? (Second grade - A.8)
- Numbers and comparing: Even and odd I (Third grade - A.4)
- Numbers and comparing: Even and odd II (Third grade - A.5)

2.MEA Measurement

2.2 The learner will recognize and use standard units of metric and customary measurement.
2.2.01 Estimate and measure using appropriate units.
2.2.01.a Length (meters, centimeters, feet, inches, yards).
- Measurement: Which unit of length is appropriate? (Second grade - S.2)
- Measurement: Choose the appropriate measuring tool (Second grade - S.8)
2.2.01.b Temperature (Fahrenheit).
- Measurement: Read a thermometer (First grade - M.1)
- Measurement: Read a thermometer (Second grade - S.1)
2.2.02 Tell time at the five-minute intervals.

2.GEO Geometry

2.3 The learner will perform simple transformations.
- Geometry: Flip, turn, and slide (Second grade - T.6)
- Geometry: Reflection, rotation, and translation (Third grade - P.5)
2.3.01 Combine simple figures to create a given shape.
2.3.02 Describe the change in attributes as two- and three-dimensional figures are cut and rearranged.
2.3.03 Identify and make:
2.3.03.a Symmetric figures.
- Geometry: Symmetry (First grade - J.11)
- Geometry: Symmetry (Second grade - T.4)
2.3.03.b Congruent figures.
- Geometry: Congruent (Second grade - T.5)

2.DAP Data Analysis and Probability

2.4 The learner will understand and use data and simple probability concepts.
2.4.01 Collect, organize, describe and display data using Venn diagrams (three sets) and pictographs where symbols represent multiple units (2's, 5's, 10's).
2.4.02 Conduct simple probability experiments; describe the results and make predictions.
- Probability and statistics: More, less, and equally likely (Second grade - V.1)
- Probability and statistics: Certain, probable, unlikely, and impossible (Second grade - V.2)

2.ALG Algebra

2.5 The learner will recognize and represent patterns and simple mathematical relationships.
2.5.01 Identify, describe, translate, and extend repeating and growing patterns.
2.5.02 Write addition and subtraction number sentences to represent a problem; use symbols to represent unknown quantities.