Third Grade Math
Standards
Book 
MAT03 "I can ... statements" 

(OA)  (NBT)  (NF)  (MD)  (G)  
Operations Algebraic Thinking 
Number Operations Base Ten 
Number Operations Fraction 
Measurement Data 
Geometry 

Prioritized Standards  
Kindergarten Math  First Grade Math  Second Grade Math 
Prioritized 
MAT03.G.01MAT03.G.01 Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals. Draw examples of quadrilaterals that do not belong to any of these subcategories.  
MAT03.MD
Narrative for (MD) Measurement and DataStudents in Grade 3 learn to solve a variety of problems involving measurement and such attributes as length and area, liquid volume, mass, and time.They focus on solving realworld and mathematical problems involving perimeters of polygons. Third graders also focus on learning area. Students learn formulas to compute area, with those formulas based on, and summarizing, a firm conceptual foundation about what area is. As students work with data in Grades K–5, they build foundations for their study of statistics and probability in Grades 6 and beyond, and they strengthen and apply what they are learning in arithmetic. In Grades 3–5, work with data is closely related to the number line, fraction concepts, fraction arithmetic, and solving problems that involve the four operations. In Grade 3, the most important development in data representation for categorical data is that students now draw picture graphs in which each picture represents more than one object, and they draw bar graphs in which the height of a given bar in tick marks must be multiplied by the scale factor in order to yield the number of objects in the given category. These developments connect with the emphasis on multiplication in this grade. At the end of Grade 3, students can draw a scaled picture graph or a scaled bar graph to represent a data set with several categories (six or fewer categories). Calculation Method for DomainsDomains are larger groups of related standards. So the DomainGrade is a calculation of all the related standards. So click on the standard name below each Domain to access the learning targets and proficiency scales for each Domain's related standards.  
MAT03.MD.01
3^{rd} Grade (MAT) Targeted Standard
MAT03.MD.01 Tell and write time to the nearest minute and measure time intervals in minutes. Solve elapsed time word problems on the hour and the half hour, using a variety of strategies.  
MAT03.MD.03
3^{rd} Grade (MAT) Targeted Standard
MAT03.MD.03 Draw scaled picture graphs and scaled bar graphs to represent data sets with several categories. Solve one and twostep “how many more” and “how many less” problems using information presented in scaled bar graphs.  
MAT03.MD.08
3^{rd} Grade (MAT) Targeted Standard
MAT03.MD.08 Solve real world and mathematical problems involving perimeters of polygons, including finding the perimeter given the side lengths. Find an unknown side length. Exhibit rectangles with the same perimeter and different area or with the same area and different perimeters.  
MAT03.NBT
Narrative for (NBT) Number and Operations in Base TenAt Grade 3, the major focus is multiplication, so students’ work with addition and subtraction is limited to maintenance of fluency within 1000 for some students and building fluency to within 1000 for others. They achieve fluency with strategies and algorithms that are based on place value, properties of operations, and/or the relationship between addition and subtraction. Such fluency can serve as preparation for learning standard algorithms in Grade 4, if the computational methods used can be connected with those algorithms. For students in grade 3, the special role of 10 in the baseten system is important in understanding multiplication of onedigit numbers with multiples of 10. For example, the product of 3 x 50 can be represented as 3 groups of 5 tens, which is 15 tens, which is 150. Calculation Method for DomainsDomains are larger groups of related standards. The Domain Grade is a calculation of all the related standards. Click on the standard name below each Domain to access the learning targets and rubrics/ proficiency scales for individual standards within the domain.  
MAT03.NBT.02
3^{rd} Grade (MAT) Targeted Standard
MAT03.NBT.02 Using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction, fluently add and subtract within 1000.  
MAT03.NF
Narrative for (NF) Number and Operations  FractionsIn Grades 1 and 2, students use fraction language to describe partitions of shapes into equal shares. In Grade 3, they start to develop the idea of a fraction more formally, building on the idea of partitioning a whole into equal parts. The whole can be a shape such as a circle or rectangle, a line segment, or any one finite entity susceptible to subdivision and measurement. In Grade 4, this is extended to include wholes that are collections of objects. Grade 3 students do some preliminary reasoning about equivalent fractions, in preparation for work in Grade4. As students experiment on number line diagrams they discover that many fractions label the same point on the number line, and are therefore equal; that is, they are equivalent fractions. Previously, in Grade 2, students compared lengths using a standard measurement unit. In Grade 3 they build on this idea to compare fractions with the same denominator. They see that for fractions that have the same denominator, the underlying unit fractions (fractions with numerator1) are the same size, so the fraction with the greater numerator is greater because it is made of more unit fractions. Calculation Method for DomainsDomains are larger groups of related standards. The Domain Grade is a calculation of all the related standards. Click on the standard name below each Domain to access the learning targets and rubrics/ proficiency scales for individual standards within the domain.  
MAT03.NF.03
3^{rd} Grade (MAT) Targeted Standard
MAT03.NF.03 Explain equivalence of fractions in special cases, and compare fractions by reasoning about their size.
a. Understand two fractions as equivalent (equal) if they are the same size, or the same point on a number line.
b. Recognize and generate simple equivalent fractions. Explain why the fractions are equivalent using a visual fraction model. c. Recognize fractions, a/1 or a/a, that are equivalent to whole numbers. Express whole numbers as fractions, a/1 or a/a. d. Compare two fractions with the same numerator or the same denominator by reasoning about their size. e. Recognize that comparisons are valid only when the two fractions refer to the same whole. f. Record the results of comparisons with the symbols >, =, or <, and justify the conclusions by using a visual fraction model.  
MAT03.OA
Narrative for the (OA) Operations and Algebraic ThinkingAlgebraic thinking is about generalizing arithmetic operations and operating on unknown quantities. It involves recognizing and analysing patterns and developing generalizations about these patterns. In algebra, symbols can be used to represent generalizations. Operations and Algebraic Thinking deals with the basic operations  addition, subtraction, multiplication, and division  the relationships they model, the kinds of problems they can be used to solve, as well as, their mathematical properties and relationships. Students in Grade 3 begin the step to formal algebraic language by using a letter for the unknown quantity in expressions or equations for one and twostep problems. As with twostep problems at Grade 2, which involve only addition and subtraction, the Grade 3 twostep word problems vary greatly in difficulty and ease of representation. More difficult problems may require two steps of representation and solution rather than one Students focus on understanding the meaning and properties of multiplication and division and on finding products of singledigit multiplying and related quotients. These skills and understandings are crucial; students will rely on them for years to come as they learn to multiply and divide with multidigit whole number and to add, subtract, multiply and divide with fractions and with decimals. All of the understandings of multiplication and division situations, of the levels of representation and solving, and of patterns culminate by the end of Grade 3 in fluent multiplying and dividing all singledigit numbers and 10. This is the outcome of a carefully designed learning process that heavily involves the interplay of practice and reasoning about the relationship between multiplication and division facts. Calculation Method for DomainsDomains are larger groups of related standards. The Domain Grade is a calculation of all the related standards. Click on the standard name below each Domain to access the learning targets and proficiency scales for individual standards within the Domain.  
MAT03.OA.03
3^{rd} Grade (MAT) Targeted Standard
MAT03.OA.03 Using drawings and equations with a symbol for an unknown number, solve multiplication and division word problems within 100 in situations involving equal groups, arrays, and measurement quantities.  
MAT03.OA.07
3^{rd} Grade (MAT) Targeted Standard
MAT03.OA.07 Using mental strategies, fluently multiply and divide within 100.
Use multiple strategies such as countby/skip counting, doubles, double/doubles, double/double/doubles, derived facts, benchmark numbers, decomposition.
 