Find the Starting Number: Hundred Chart Addition

Explore finding missing starting numbers in addition equations with this engaging hundred-chart worksheet! This resource guides second-grade students in determining the unknown first addend in addition sentences by using a hundred chart for visual support. By counting backward from the sum, learners can clearly visualize the relationship between addition and subtraction to find the missing value. 

This practice helps build a strong understanding of unknown numbers in equations, which is a key building block for future algebraic reasoning.

Looking for additional hundred-chart practice? Check out Hundred Chart Addition: Mystery Path #1 and Hundred Chart Addition: Mystery Path #2.