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Common Core: Math
CCLS  Math: 2.NBT.7
 Category
 Number And Operations In Base Ten
 SubCategory
 Use Place Value Understanding And Properties Of Operations To Add And Subtract.
 State Standard:
 Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
49 Results

 Grade 2 Module 4: Addition and Subtraction Within 200 with Word Problems to 100 In Module 4, students develop place value strategies to fluently add and subtract within 100; they represent and solve...

 Grade 2 Module 5: Addition and Subtraction Within 1,000 with Word Problems to 100 In Module 4, students developed addition and subtraction fluency within 100 and began developing conceptual...

 Objective: Relate 10 more, 10 less, 100 more, and 100 less to addition and subtraction of 10 and 100.

 In Topic B, students apply their understanding of place value strategies to the addition algorithm, moving from horizontal to vertical notation. Their understanding of vertical addition starts with...

 Objective: Use manipulatives to represent the composition of 10 ones as 1 ten with twodigit addends.

 In Topic A, students practice the simplifying strategies they learned in Module 4, but with numbers up to 1,000. They will be asked to consider which strategy is most efficient for each problem they...

 Objective: Represent subtraction with and without the decomposition of 1 ten as 10 ones with manipulatives.

 Topic C parallels Topic B, as students apply their understanding of place value strategies to the subtraction algorithm, moving from concrete to pictorial to abstract. It is important to note that...

 Grade 2 Math Common Core Instruction: Use modeling and tools to solve three digit subtraction problems

 Objective: Add and subtract multiples of 100 including counting on to subtract.

 In Lesson 17 of Topic D, students extend the base ten understanding developed in Topic A to numbers within 200. Having worked with manipulatives to compose 10 ones as 1 ten, students relate this to...

 Objective: Relate manipulative representations to a written method.

 Objective: Use math drawings to represent subtraction with and without decomposition and relate drawings to a written method.

 Topic E begins with an extension of mental math strategies learned in first grade, when students learned to subtract from the ten by using number bonds. In Lesson 23, they return to this strategy to...

 Objective: Add multiples of 100 and some tens within 1,000.

 Objective: Represent subtraction with and without the decomposition when there is a threedigit minuend.

 Module 4 culminates with Topic F, in which students think about and discuss the multiple strategies they have learned to represent and solve addition and subtraction problems. They share their...

 Objective: Relate manipulative representations to the addition algorithm.

 Objective: Use number bonds to break apart threedigit minuends and subtract from the hundred.

 Objective: Use the associative property to make a hundred in one addend.

 Objective: Use manipulatives to represent additions with two compositions.

 Objective: Choose and explain solution strategies and record with a written addition or subtraction method.

 Objective: Represent subtraction with and without the decomposition when there is a threedigit minuend.

 Objective: Relate manipulative representations to a written method.