Subtracting across zeros
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Subtracting Across Zeros. Fourth Grade. How can I borrow when the neighbor is a zero?. 704 - 438. Eight cannot be subtracted from four so we have to go to the next door neighbor to borrow. 704 - 438. But what happens when the next door neighbor is the number zero?.

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Subtracting Across Zeros

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Subtracting across zeros

Subtracting Across Zeros

Fourth Grade


How can i borrow when the neighbor is a zero

How can I borrow when the neighbor is a zero?

704

- 438


Eight cannot be subtracted from four so we have to go to the next door neighbor to borrow

Eight cannot be subtracted from four so we have to go to the next door neighbor to borrow.

704

- 438

But what happens when the next door neighbor is the number zero?


How can i borrow when the neighbor is a zero1

How can I borrow when the neighbor is a zero?

704

- 438


How can i borrow when the neighbor is a zero2

How can I borrow when the neighbor is a zero?

704

- 438

When the next door neighbor is a zero, you can’t borrow from it. So, you must continue to the next neighbor to see if you can borrow from it.


How can i borrow when the neighbor is a zero3

How can I borrow when the neighbor is a zero?

704

- 438

In this problem, the next neighbor is the number seven. We are able to borrow from this neighbor.


Subtracting across zeros

First you borrow from the seven and make it a six. Then you can go back to the zero and make it a ten.

10

6

704

- 438


We no longer have a zero but we still are not able to subtract eight from four

We no longer have a zero, but we still are not able to subtract eight from four.

10

6

704

- 438


We can go back now to the tens place and borrow from our neighbor the ten

We can go back now to the tens place and borrow from our neighbor the ten.

10

6

704

- 438


First we borrow from the ten and make it a nine

First we borrow from the ten and make it a nine.

9

10

6

704

- 438


Then we change the four to a fourteen

Then we change the four to a fourteen.

9

10

14

6

704

- 438


We are now ready to subtract

We are now ready to subtract!

9

10

14

6

704

- 438


Subtracting across zeros

9

10

14

6

704

- 438

2

6

6


How can i borrow when the neighbor is a zero4

How can I borrow when the neighbor is a zero?

300

- 266


Six cannot be subtracted from zero so we have to go to the next door neighbor to borrow

Six cannot be subtracted from zero so we have to go to the next door neighbor to borrow.

300

- 266


Subtracting across zeros

When the next door neighbor is a zero, you can’t borrow from it. So, you must continue to the next neighbor to see if you can borrow from it.

300

- 266

In this problem, the next neighbor is the number three. We are able to borrow from this neighbor.


Subtracting across zeros

First you borrow from the three and make it a two. Then you can go back to the zero and make it a ten.

10

2

300

- 266


We no longer have a zero but we still are not able to subtract six from zero

We no longer have a zero, but we still are not able to subtract six from zero.

10

2

300

- 266


We can go back now to the tens place and borrow from our neighbor the ten1

We can go back now to the tens place and borrow from our neighbor the ten.

10

2

300

- 266


First we borrow from the ten and make it a nine1

First we borrow from the ten and make it a nine.

9

10

2

300

- 266


Then we change the zero to a ten

Then we change the zero to a ten.

9

10

10

2

300

- 266


We are now ready to subtract1

We are now ready to subtract!

9

10

10

2

300

- 266


We are now ready to subtract2

We are now ready to subtract!

9

10

10

2

300

- 266

3

4


Subtracting across zeros

Now it is your turn to try one!

9

10

10

6

700

- 211

4

8

9


Subtracting across zeros

Try another one!

9

10

10

7

800

- 92

7

0

8


Subtracting across zeros

Try one more!

9

9

10

4

10

10

5,000

- 174

4,

8

2

6


Now you are ready to try some on your own good luck

Now you are ready to try some on your own good luck!


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