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Grade 2 - Number and Operations in Base Ten
Standard 2.NBT.B.7 - Complete the table with numbers up to 1000 by applying the addition rule to the left column to get the result in the right column.
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.