AĆ±adir dentro de 1000
2nd Grade


Alabama Course of Study Standards:
12

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. Explain that in adding or subtracting threedigit 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.

Arkansas Academic Standards:
2.NBT.B.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and the relationship between addition and subtraction; relate the strategy to a written expression or equation 
Arizona  K12 Academic Standards:
2.NBT.B.7

Demonstrate understanding of addition and subtraction within 1000, connecting objects or drawings to strategies based on place value (including multiples of 10), properties of operations, and/or the relationship between addition and subtraction. Relate the strategy to a written form. See Table 1. 
Common Core State Standards:
Math.2.NBT.7 or 2.NBT.B.7

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 threedigit 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. 
North Carolina  Standard Course of Study:
2.NBT.7

Add and subtract, within 1,000, relating the strategy to a written method, using: Concrete models or drawings
 Strategies based on place value
 Properties of operations
 Relationship between addition and subtraction

New York State Next Generation Learning Standards:
2.NBT.7

 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 representation. Notes: Students should be taught to use concrete models and drawings; as well as strategies based on place value, properties of operations, and the relationship between addition and subtraction. When solving any problem, students can choose to use a concrete model or a drawing. Their strategy must be based on place value, properties of operations, and/or the relationship between addition and subtraction. A written representation is any way of showing a strategy using words, pictures, or numbers.  Understand that in adding or subtracting up to threedigit 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

Tennessee Academic Standards:
2.NBT.B.7

Add and subtract within 1000 using concrete models, drawings, strategies based on place value, properties of operations, and/or the relationship between addition and subtraction to explain the reasoning used. 
