# Addition Number Talk: First Grade

Grade 1 / Math / Tch DIY
CCSS: Math.1.NBT.C.4

Common Core State Standards

 Math Math 1 Grade 1 NBT Number & Operations in Base Ten C Use place value understanding and properties of operations to add and subtract 4 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, and/or the relationship between addition and subtraction; 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. Download Common Core State Standards (PDF 1.2 MB)

Number Talks encourage students to think flexibly about the operations and their properties as they solve problems mentally.

Tch visited Kristin's Gray's school. Watch the video.

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