Lesson: Adding Two-Digit Numbers on Number Lines Mathematics • 1st Grade

In this lesson, we will learn how to use a number line to add two-digit numbers to two-digit numbers by making jumps of ten and one.

Lesson Video

Q1:

Look at how Liam added 32 to 27 by adding 3 tens and then 2 ones.

Use number lines to find the answers to these sums.

Q2:

Isabella is adding using a number line.

Pick the sum she is working on.

Find the answer.

Q3:

Use the given number line to solve by jumping tens and ones.