2.AT.A.1: Use addition and subtraction within 100 to solve one-step problems in context involving an unknown in any situation or position by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Use addition and subtraction within 100 to solve one-step problems in context involving an unknown in any situation or position by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

Example Problems

Find the missing value:

6 = ? - 2

Find the missing value:

x - 1 = 5

Find the missing value:

-8 - ? = 2

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