1. Add Multiples of 100
Practice adding 2 multiples of 100, using concept of place value. The key idea is to visualize this as adding bundles of 100. For example 200 + 300 = 500 can be thought of as 2 hundreds + 3 hundreds = 5 hundreds. Adding Multiples of 100 Worksheet contains problems on adding hundreds using models (base 10 blocks) followed by some direct addition.
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.