IXL | Count on and use ten to subtract - up to 20 | 2nd grade math

or

Find

15

–

9

.

You can count on and use 10. Which number line shows how?

5

6

7

8

9

10

11

12

13

14

15

5

6

7

8

9

10

11

12

13

14

15

Now, use your choice to subtract.

15

–

9

=

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or

Learn with an example

question

Find

11

–

6

.

You can count on and use 10. Which number line shows how?

2

3

4

5

6

7

8

9

10

11

12

2

3

4

5

6

7

8

9

10

11

12

Now, use your choice to subtract.

11

–

6

=

solution

To find

11

–

6

,

you can count on and use 10.

Start at 6. Count on 4 to get to 10.

2

3

4

5

6

7

8

9

10

11

12

Count on 1 more to get to 11.

2

3

4

5

6

7

8

9

10

11

12

You counted on 5 in all.

11

–

6

=

5

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or

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Work it out

Not feeling ready yet? These can help:

F.7Make ten to add

H.5Subtract by counting on - up to 20