Adding Tens on an Open Number Line: Write the Equation #1

Invite students to use open number lines to help them write addition equations with this first-grade practice worksheet! The first in a series of three, this colorful and inviting math worksheet features four two-digit addition problems. Each addition equation has an addend that is a multiple of 10 and a sum that is within 100. For each problem, learners are presented with open number lines that model an addition equation. Students will need to analyze each number line and write an addition equation that matches the given model.

For more practice using the number line addition strategy, be sure to check out the next two worksheets in this series: Adding Tens on an Open Number Line: Write the Equation #2 and Adding Tens on an Open Number Line: Write the Equation #3!