Lesson: Adding Numbers up to 20 on a Number Line Elementary School • Mathematics • 2nd Grade • Elementary School Mathematics 1st Grade

Mathematics

In this lesson we will learn how to add within 20 by jumping forward in ones on a number line.

Video

03:52

Q1:

Use the number line to complete the following addition sentence.

Q2:

On this number line, Elizabeth started at 13 and counted forward until she reached 18.

Which number sentence describes what Elizabeth did?

Q3:

I start at a number and count forward. Does this represent adding or subtracting?

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