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1.NBT.C.6

18 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.

2nd Grade - Addition and Subtraction Within 20

Students extend their knowledge of addition and subtraction within 20 to fluently add and subtract within 20 using various strategies. This work is put into practice as students solve add to, take from, and put together/take apart word problem types using tape diagrams and equations to represent what is happening mathematically.

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.

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. 

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. 

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 1

Add and subtract 1 and 10 to or from two-digit numbers.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 2

Add and subtract multiples of 1 or multiples of 10 to or from two-digit numbers.

2nd Grade Math - Unit 1: Addition and Subtraction Within 20 - Lesson 5

Find the value that makes equations true where one part is 10 or a teen number.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 7

Subtract within 100 by using a ten to help.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 8

Subtract within 100 in cases that do not involve decomposing a ten

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 9

Subtract a one-digit number from a two-digit number in cases that require decomposing a ten.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 10

Subtract two two-digit numbers in cases that require decomposing a ten.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 11

Subtract within 100 in cases that require decomposing a ten, recording that work with equations.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 12

Subtract within 100, recognizing when a ten will be decomposed.

2nd Grade Math - Unit 2: Adding and Subtracting Within 100 - Lesson 13

Add and subtract within 100 and explain thinking.

2nd Grade Math - Unit 5: Adding and Subtracting Within 1,000 - Lesson 21

Solve one-step word problems using strategies to solve within 100.

2nd Grade Math - Unit 5: Adding and Subtracting Within 1,000 - Lesson 22

Solve two-step word problems using strategies to solve within 100.

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