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3rd grade
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Addition, subtraction, estimation
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Mentally add within 1000
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Round to the nearest 10 or 100
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Add and subtract within 1000, abstract
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Multiplication
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Multiplication using rectangular arrays and equal groups, concrete and visual
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Multiplication as repeated addition
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Multiply, abstract
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Division
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Divide using equal groups
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Division using repeated subtraction
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Divide, abstract
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Fractions
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Equal shares of shapes and unit fractions
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Plot fractions on the number line
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Relating fractions to 1
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Representing whole numbers as fractions
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Comparing fractions with like numerators, denominators, or both
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Relating multiplication and division
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Missing number problems, multiplication and division
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Relating multiplication to division
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Use properties to multiply and divide
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Multiply one-digit numbers by multiples of 10
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Arithmetic patterns and problem solving
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Two-step word problems
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Patterns in addition and multiplication
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Intro to the triangular numbers
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Intro to the Fibonacci sequence
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Intro to Pascal's triangle
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Geometry
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Shape heirarchy
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Area of composite rectangles by counting unit squares
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Area and units of measure
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Area as multiplication
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Area, perimeter, and how they're related
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Time, measurement, and data
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Tell and write time, minute increments
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Measure and estimate volumes and masses
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Scaled bar and picture graphs
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Line plots with fractions
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3rd grade
›
Fractions
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Equal shares of shapes and unit fractions
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Other resources
Unit fractions
In this section, students will learn how to plot and find unit fractions on the number line.
YouTube videos
9775
3.NF.A.1
SEDL
Khan Academy exercises
Unit fractions on the number line
Khan Academy