Write the Equation: Adding Within 100 on an Open Number Line

Use open number lines to practice two-digit addition within 100 with this inviting math worksheet! This number line worksheet provides scaffolded practice to help learners write addition equations by highlighting the first and last numbers on the number line and illustrating the number line jumps of tens and ones used to get there. For each of the four problems, students will look at the work shown on the open number line to help them complete each part of the equation. This one-page practice worksheet begins by asking learners to add two-digit multiples of 10 to a two-digit number, and then the problems progress to include equations where two two-digit numbers are being added. Get more practice with this addition strategy with the Open Number Line Addition Within 100: Write the Equation #1 worksheet!