Adding Two-Digit Numbers on an Open Number Line #1

Practice adding two-digit numbers on open number lines with this inviting addition worksheet! Designed for first graders, this worksheet asks learners to use the number line addition strategy to add two whole numbers within 100. For each of five problems, students will plot the first addend on the open number line. From there, learners will mark the addition of each of the tens and ones that make up the second addend until they get to the sum of the two addends. This thoughtfully designed worksheet is a great way to help students better understand how to use place value when adding two-digit numbers. For more practice, check out Adding Two-Digit Numbers on an Open Number Line #2 and Adding Two-Digit Numbers on an Open Number Line #3!