15 − 9 = ?

Let’s subtract by making 10 first.

15 − = 10

10 − = 6

Now,

15 − 9 =

Subtract

14 − 5 = ?

Let’s subtract by making 10 first.

14 − = 10

10 − = 9

Now,

14 − 5 =

Subtract

16 − 7 = ?

Let’s subtract by making 10 first.

16 − = 10

10 − = 9

Now,

16 − 7 =

Subtract

15 − 8 = ?

Let’s subtract by making 10 first.

15 − = 10

10 − = 7

Now,

15 − 8 =

Subtract

15 − 6 = ?

Let’s subtract by making 10 first.

15 − = 10

10 − = 9

now,

15 − 6 =

Subtract

12 − 4 = ?

Let’s subtract by making 10 first.

12 − = 10

10 − = 8

Now,

12 − 4 =

Subtract

15 − 8 = ?

Let’s subtract by making 10 first.

15 − = 10

10 − = 7

Now,

15 − 8 =

Subtract

13 − 5 = ?

Let’s subtract by making 10 first.

13 − = 10

10 − = 8

Now,

13 − 5 =

Subtract

13 − 6 = ?

Let’s subtract by making 10 first.

13 − = 10

10 − = 7

Now,

13 − 6 =

Subtract

14 − 6 = ?

Let’s subtract by making 10 first.

14 − = 10

10 − = 8

Now,

14 − 6 =

Subtract

17 − 9 = ?

Let’s subtract by making 10 first.

17 − = 10

10 − = 8

Now,

17 − 9 =

Subtract

14 − 8 = ?

Let’s subtract by making 10 first.

14 − = 10

10 − = 6

Now,

14 − 8 =

Subtract

13 − 5 = ?

Let’s subtract by making 10 first.

13 − = 10

10 − = 8

Now,

13 − 5 =

Subtract

13 − 9 = ?

Let’s subtract by making 10 first.

13 − = 10

10 − = 4

Now,

13 − 9 =

Subtract

14 − 8 = ?

Let’s subtract by making 10 first.

14 − = 10

10 − = 6

Now,

14 − 8 =