1.NBT.4 | EngageNY

CCLS - Math: 1.NBT.4

Category
Number And Operations In Base Ten
Sub-Category
Use Place Value Understanding And Properties Of Operations To Add And Subtract.
State Standard:
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.