Content Standard(s): 
Mathematics MA2019 (2019) Grade: 2  1. Use addition and subtraction within 100 to solve one and twostep word problems by using drawings and equations with a symbol for the unknown number to represent the problem. Unpacked Content
 Mathematics MA2019 (2019) Grade: 2  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.
a. 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. Unpacked Content
Alabama Alternate Achievement Standards
 Mathematics MA2019 (2019) Grade: 2  14. Explain why addition and subtraction strategies work, using place value and the properties of operations.
Note: Explanations may be supported by drawings or objects. Unpacked Content


