Grade 3 Overview
In Grade 3, multiplication and division take center stage. Students will build a conceptual understanding of multiplication and division prior to becoming fluent in multiplying and dividing within 100. Third graders will learn and use strategies to solve multi-step problems involving the four operations.
Third graders will connect multiplication and division rather than seeing them separately. For example, they learn that 4 × 6 = 24 then connect that to 24 ÷ 4 = 6 and 24 ÷ 6 = 4. In addition, they will use the properties of multiplication, such as the distributive property, to help solve a more difficult problem by breaking it down into an easier problem. For example, they can solve 7 × 9 by breaking it into (7 × 4) + (7 × 5).
Multiplication in Grade 3 will be further explored through geometric measurement, specifically by understanding how the concept of area relates to multiplication.
Students in Grade 3 will master addition and subtraction in the hundreds, with conceptual understanding of place value concepts. They will develop flexible, efficient and accurate strategies, though not the U.S. customary algorithm. This algorithm is taught in Grade 4, once the concepts of place value and operation are deeply rooted.
Students in Grade 3 develop an understanding of fractions as numbers. They begin with unit fractions and build other fractions from the unit fraction. They solve problems that involve comparing fractions by using visual fraction models, taking notice of equal numerators or denominators. Magnitude and equality of fractions is also explored using number lines.
Third graders will solve problems involving measurement and estimation of intervals of time, liquid volumes, and masses of objects. They will also learn to represent and interpret data through the use of bar graphs, pictographs and line plots.