Third Grade

Overview of Mathematics in Grade 3

In grade three, students will continue to build their concept of numbers, developing an understanding of fractions as numbers. They will learn the concepts behind multiplication and division and apply problem-solving skills and strategies for multiplying and dividing numbers up through 100 to solve word problems. Students will also make connections between the concept of the area of a rectangle and multiplication and addition of whole numbers. Activities in these areas will include:

  • Understanding and explaining what it means to multiply or divide numbers
  • Multiplying all one-digit numbers from memory (knowing their times table)
  • Multiplying one-digit numbers by multiples of 10 (such as 20, 30, 40)
  • Solving two-step word problems using addition, subtraction, multiplication and division
  • Understanding the concept of area
  • Relating the measurement of area to multiplication and division
  • Understanding fractions as numbers
  • Understanding and identifying a fraction as a number on a number line
  • Comparing the size of two fractions
  • Expressing whole numbers as fractions and identifying fractions that are equal to whole numbers (for example, recognizing that  3/1  and 3 are the same number)
  • Measuring weights and volumes and solving word problems involving these measurements
  • Representing and interpreting data

Sources:

Council of the Great City Schools "Parent Roadmap- Supporting Your Child in Grade Third, Mathematics" http://www.cgcs.org/cms/lib/DC00001581/Centricity/Domain/36/ParentGuide_Math_3.pdf

CT Core Standards - "Common Core State Standards 3-5 Domain Progressions" http://ctcorestandards.org/wp-content/uploads/2014/08/CCSS_math_3_5_Domain_Progressions.pdf

Common Core State Standards - "Grade 3" http://www.corestandards.org/Math/Content/3/introduction/