• Key Concepts in Grade 3 Math


    • Place value

      • Place value to the hundred-thousand place

      • Rounding whole numbers to the nearest ten or hundred

      • Estimating using rounding or compatible numbers

      • Modeling with place value blocks for adding and subtracting

      • Standard and expanded word form

      • Comparison and ordering of larger numbers

    • Math fact mastery - addition, subtraction, multiplication and division

    • Addition and subtraction of whole numbers

      • Using mental math to add and subtract

      • Adding and subtracting with regrouping

      • Subtracting across zeros

    • Multiplication and Division

      • Understand that multiplication is repeated addition

      • Use arrays as visual models of multiplication

      • Commutative and distributive properties of multiplication

      • Multiply 3 factors

      • Multiples of 10

      • Understand that division is sharing and repeated subtraction

      • Relationship between multiplication and division

    • Fractions 

      • Fractions as equal parts

      • Fractions as parts of a set

      • Fractions on a number line

      • Comparing fractions with like denominators

      • Equivalent fractions

      • Mixed numbers

    • Geometry

      • Lines, segments, angles

      • Polygons, including triangles and quadrilaterals, and their characteristics (number of sides, angles, parallel sides, right angles, etc.)

      • Perimeter and area

      • Customary and metric units of capacity, weight, length

    • Time

      • Time to half hour, quarter hour, minute

      • Units of time: days in a week, hours, etc.

      • Elapsed time and working backwards to determine elapsed time

    • Problem solving

      • Solve word problems using all key concepts

      • Use bar diagrams to solve problems and include examples

      • Determine if an answer is reasonable or not

      • Multiple-step problems