Subtracting Across Zeros
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Subtracting Across Zeros Fourth Grade
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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?. - PowerPoint PPT Presentation
Transcript of Subtracting Across Zeros
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?
How can I borrow when the neighbor is a zero?
704- 438
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 zero?
704- 438
In this problem, the next neighbor is the number seven. We are able to borrow from this neighbor.
First you borrow from the seven and make it a six. Then you can go back to the zero and make it a ten.
704- 438
6 10
We no longer have a zero, but we still are not able to subtract eight from four.
704- 438
6 10
We can go back now to the tens place and borrow from our neighbor the ten.
704- 438
6 10
First we borrow from the ten and make it a nine.
704- 438
6 109
Then we change the four to a fourteen.
704- 438
6 109
14
We are now ready to subtract!
704- 438
6 109
14
704- 438
6 109
14
662
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.
300- 266
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.
300- 266
First you borrow from the three and make it a two. Then you can go back to the zero and make it a ten.
2 10
300- 266
2 10
We no longer have a zero, but we still are not able to subtract six from zero.
300- 266
2 10
We can go back now to the tens place and borrow from our neighbor the ten.
300- 266
2 10
First we borrow from the ten and make it a nine. 9
300- 266
2 109
Then we change the zero to a ten.
10
300- 266
2 109
We are now ready to subtract!
10
300- 266
2 109
We are now ready to subtract!
10
43
700- 211
Now it is your turn to try one!
6 109
10
984
800- 92
Try another one!
7 109
10
807
5,000- 174
Try one more!
4 109
10
628
910
4,
Now you are ready to try some on your own good luck!
