Addition Counting On

Presentation

•

Mathematics

•

2nd Grade

•

Hard

Joseph Anderson

FREE Resource

8 Slides • 6 Questions

Counting On

mental math

Standard KY.2.OA.2 :

"Fluently add and subtract within 20 using mental strategies."

I can statements

I can understand adding by counting on from the biggest number.
I can explain how I do mental addition to find the answer.

Count on Definition:

Mental math strategy to add two numbers. We start with the biggest number of the numbers to added and count up to the second.

6 + 5 =?

We start on the biggest number (6) and then we count on with the smallest number (5 )
start on 6 and go up 5....
7...8....9...10...11
so 6 + 5 = 11

Let's see that addition problem on a number line

Let's practice adding on in our heads by counting on from the BIGGEST number.

Fill in the Blanks

8 + 3 =

Type answer...

Poll

3+9

Fill in the Blanks

5+4

Type answer...

Multiple Choice

6+2

Fill in the Blanks

9+6

Type answer...

Open Ended

Explain how to add 7 + 5 and find the Sum.

Type response here

Good Job!

Remember find the biggest number first and then count on by the smallest number.
This will make it easier to add in your head.

Counting On

mental math

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