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Add by Composing Tens and Hundreds

- Grade 2 Math

Practice adding numbers within 1000 with carry at the ones and tens place. While adding numbers using place value concepts, students add ones to ones, tens to tens and hundreds to hundreds. In this method, some times it is necessary to regroup the resulting ones as tens or the resulting tens as hundreds. Add by Composing Tens and Hundreds Worksheet focuses on problems with situations, where it is necessary to regroup ones to compose tens and to regroup tens to compose hundreds. This concept is the precursor to the concept of carry in the standard algorithm. 

Common Core Alignment

2.NBT.7Add 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.