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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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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 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.

slide7
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

slide13
9

10

14

6

704

- 438

2

6

6

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

slide16
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.

slide17
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

slide25
Try another one!

9

10

10

7

800

- 92

7

0

8

slide26
Try one more!

9

9

10

4

10

10

5,000

- 174

4,

8

2

6

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