Achieve the Core Priority Instructional Content
*2.OA.B.2: Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers. - Required Fluency
*2.NBT.B.5: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. - Required Fluency
*2.NBT.B.5: Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction. - Required Fluency
*2.NBT.B.6: Add up to four two-digit numbers using strategies based on place value and properties of operations. - Key Standard
*2.NBT.B.6: Add up to four two-digit numbers using strategies based on place value and properties of operations. - Key Standard
*2.NBT.B.8: Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900. - Key Standard
*2.NBT.B.9: Explain why addition and subtraction strategies work, using place value and the properties of operations. - Key Standard