Fun and colorful way to teach CCSS.Math.Content.1.NBT.C.4.
Worksheets teach students to add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations of addition; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten.
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Rainbow Number Partners That Make 5, 10 and 100
by Helaina Winnicki
is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License