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3.NBT.A.2

49 Results Found

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1st Grade Math

In this Common Core-aligned course, 1st graders develop an understanding of addition and subtraction within 20, place value, measurement, and geometric shapes.

2nd Grade Math

In this Common Core-aligned course, 2nd graders develop an understanding of and fluency with addition and subtraction, place value within 1,000, measurement with both standard and metric units, and properties of two-dimensional shapes.

3rd Grade Math

In this Common Core-aligned course, third graders develop an understanding of and fluency with multiplication and division within 100, fractions, area, and properties of two-dimensional shapes.

4th Grade Math

In this Common Core-aligned course, students develop an understanding of multi-digit multiplication and division; fraction equivalence and operations with fractions; and classification and analysis of geometric figures and their angles.

5th Grade Math

In this Common Core-aligned course, students continue to explore operations with fractions; develop understanding of operations containing whole numbers and decimals to hundredths; and familiarize themselves with volume.

3rd Grade - Rounding, Addition, and Subtraction

Students estimate quantities using rounding and develop fluency with the standard algorithm of addition and subtraction. Students focus on the precision of their calculations, and use them to solve real-world problems.

1st Grade - Adding and Subtracting Within 10

Students build fluency with addition and subtraction within 10 using various strategies. Students solve familiar story problem types within 10 using objects, pictures, and equations to represent the mathematics in the problem.

4th Grade - Place Value, Rounding, Addition, and Subtraction

Students learn to compare numbers, round to any place, work towards fluency with the standard algorithms for adding and subtracting, and solve multi-step word problems involving addition and subtraction.

5th Grade - Place Value with Decimals

Students build upon their understanding of the place value system by extending its patterns to decimals, and continue to read, write, compare, and round numbers, including decimals, in various forms.

3rd Grade - Multiplication and Division, Part 1

Students begin to explore the concepts of multiplication and division, beginning in the context of equal group and array problems, moving to skip-counting and repeated addition, and ending with more complex and/or abstract problems.

2nd Grade - Adding and Subtracting Within 100

Students develop strategies based on place value, properties of operations, and the operational relationship between addition and subtraction to add and subtract within 100 fluently. Students will use these strategies to add up to four two-digit numbers and explain why these strategies work. Students also explore categorical data. 

1st Grade - Adding and Subtracting With Story Problems

Students solve new story problem types within 10 using objects, pictures, and equations to represent the mathematics in the problem. They explore the relationship between addition and subtraction and develop flexibility relating equations to story problems.

4th Grade - Multi-Digit Multiplication

Students are introduced to multi-digit multiplication and its applications, including multiplicative comparison.

3rd Grade - Multiplication and Division, Part 2

Students deepen their understanding of multiplication and division, including their properties and extending their study of factors to include all units from 0 to 10, as well as multiples of 10 within 100.

2nd Grade - Place Value with Numbers to 1,000 & Money

Students extend their place value knowledge to 1,000 and use this knowledge to represent and compare three-digit numbers. Students are also introduced to money, identifying coins and their value, and determining the value of coin collections.

2nd Grade - Adding and Subtracting Within 1,000

Students add and subtract within 1,000 using strategies based on place value, properties of operations, and the operational relationship between addition and subtraction in order to add and subtract within 1,000. Students will use these strategies to add up to two 3-digit numbers concretely, pictorially and abstractly and explain why these strategies work. 

4th Grade Math - Unit 1: Place Value, Rounding, Addition, and Subtraction - Lesson 1

Review place value understanding for numbers within 1,000.

3rd Grade Math - Unit 1: Rounding, Addition, and Subtraction - Lesson 1

Use counting, place value understanding, and addition/subtraction of ones and tens to complete a partially filled-in number grid.

3rd Grade Math - Unit 1: Rounding, Addition, and Subtraction - Lesson 2

Represent three-digit numbers using concrete manipulatives and drawings, including cases with more than 9 of any unit.

3rd Grade Math - Unit 1: Rounding, Addition, and Subtraction - Lesson 3

Locate three-digit numbers on a number line and explain their placement.

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