IXL Math - Oregon third-grade math standards

IXL Math

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Oregon

Skills available for Oregon third-grade math standards

Oregon math standards: 2007 Oregon Standards (Grades K-6)

Oregon math standards: 2002 Oregon Standards (Grades K-5)

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.

Printable version

3.1 Number and Operations

3.1.1 Represent common fractions (e.g., halves, thirds, fourths, tenths) as equal parts of a whole, parts of a set, or points or distances on a number line.
3.1.2 Recognize and demonstrate that sizes of fractional parts are relative to the size of the whole.
3.1.3 Use fractions to represent numbers that are equal to, less than, or greater than one.
- Fractions: Fractions of a number (Third grade - Q.8)
- Fractions: Fractions of a number - word problems (Third grade - Q.9)
3.1.4 Solve problems that involve comparing and ordering fractions by using models, benchmarks (0, ½, 1), or common numerators or denominators.
- Fractions: Compare fractions (Third grade - Q.3)
- Fractions: Order fractions (Third grade - Q.7)
3.1.5 Identify equivalent fractions using models, including the number line.
3.1.6 Add common fractions with like denominators.
- Fractions: Add and subtract fractions with like denominators (Third grade - Q.12)

3.2 Number and Operations, Algebra, and Data Analysis

3.2.1 Represent and apply the concept of multiplication as repeated addition.
- Multiplication: Multiplication - facts to 12 (Third grade - E.2)
- Properties: Relate addition and multiplication (Third grade - H.7)
3.2.2 Represent and apply the concept of division as repeated subtraction and forming equal groups.
- Division: Division facts to 5 (Third grade - F.1)
- Division: Division facts to 10 (Third grade - F.2)
3.2.3 Apply models of multiplication (e.g., equal-sized groups, arrays, area models, equal "jumps" on number lines and hundreds charts) and division (e.g., repeated subtraction, partitioning, and sharing) to solve problems.
3.2.4 Apply increasingly sophisticated strategies based on the number properties (e.g., place value, commutative, associative, distributive, identity, and zero) to solve multiplication and division problems involving basic facts.
3.2.5 Apply the inverse relationship between multiplication and division (e.g., 5 x 6 = 30, 30 ÷ 6 = 5) and the relationship between multiples and factors.
- Properties: Relate multiplication and division (Third grade - H.8)
- Equations and variables: Solve for the variable - with multiplication and division (Third grade - I.3)
3.2.6 Represent, analyze and extend number patterns using rules that involve multiplication and/or addition (e.g., {3, 6, 9, 12, ...},.{1, 2, 4, 8, ...}).
- Addition: Addition patterns over increasing place values (Third grade - C.8)
- Multiplication: Multiplication patterns over increasing place values (Third grade - E.7)
3.2.7 Analyze frequency tables, bar graphs, picture graphs, and line plots; and use them to solve problems involving addition, subtraction, multiplication, and division.

3.3 Geometry and Measurement

3.3.1 Identify right angles in two-dimensional shapes and determine if angles are greater than or less than a right angle (obtuse and acute).
- Geometry: Angles: greater than, less than, or equal to a right angle (Third grade - P.9)
- Geometry: Triangles: acute, right, and obtuse (Third grade - P.13)
3.3.2 Identify, describe, compare, analyze, and informally classify triangles by their sides and angles.
- Geometry: Triangles: equilateral, isosceles, and scalene (Third grade - P.12)
- Geometry: Triangles: acute, right, and obtuse (Third grade - P.13)
3.3.3 Identify, describe, compare, analyze, and classify quadrilaterals (square, rectangle, parallelogram, rhombus, and trapezoid) by their sides and angles.
- Geometry: Identify planar and solid shapes (Third grade - P.1)
3.3.4 Identify, describe, and compare pentagons, hexagons, and octagons by the number of sides or angles.
- Geometry: Identify planar and solid shapes (Third grade - P.1)
- Geometry: Is it a polygon? (Third grade - P.11)
3.3.5 Investigate and describe the results of decomposing, combining, and transforming polygons to make other polygons.
3.3.6 Build, draw, and analyze two-dimensional shapes to understand attributes and properties of two-dimensional space.
- Geometry: Count and compare sides, edges, faces, and vertices (Third grade - P.2)
- Geometry: Reflection, rotation, and translation (Third grade - P.5)
3.3.7 Determine an appropriate unit, tool, or strategy to find the perimeter of polygons.
- Geometry: Perimeter (Third grade - P.6)
3.3.8 Use attributes and properties of two-dimensional shapes to solve problems including applications involving parallel and perpendicular lines, congruence, symmetry, and perimeter.