Grade 2 - Number and Operations in Base Ten
Standard 2.NBT.7 - Simplify both sides of the equation. Fill in the missing number with sums up to 1000 to make the equation true.
Included Skills: Addition
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.