Chapter 1

Addition and Subtraction within 1,000:

How can you add and subtract whole numbers and decide if an answer is reasonable?

OA.D.9 - I can find patterns in addition tables and explain when using what I know about how numbers work.

NBT.A.1 - I can use place value to help me round numbers to the nearest 10 or 100.

NBT.A.2 - I can quickly and easily add and subtract numbers within 1,000.

OA.D.8 - I can solve two-step word problems by writing an equation with a letter in place of the number I don’t know.