|
|
1000’s
|
100’s
|
10’s
|
1s
|
|
1
|
3
|
3
|
5
|
|
- 0
|
7
|
8
|
6
|
In the ones place (1s),
you cannot remove 6
from 5.
|
|
1000’s
|
100’s
|
10’s
|
1s
|
|
|
|
2
|
15
|
|
1
|
3
|
3
|
5
|
|
- 0
|
7
|
8
|
6
|
So trade 1 ten (10s) for
1, giving 15 and leaving 2 tens
Look at the 10s place.
You cannot remove 8 tens from 2 tens.
|
|
1000’s
|
100’s
|
10’s
12
|
1s
|
|
|
2
|
2
|
15
|
|
1
|
3
|
3
|
5
|
|
- 0
|
7
|
8
|
6
|
So trade 1 hundred for 10
tens, giving 12 tens and leaving 2 hundreds.
Look at the 100’s place.
You cannot remove 7 hundreds from 2 hundreds.
|
|
1000’s
|
100’s
12
|
10’s
12
|
1s
|
|
0
|
2
|
2
|
15
|
|
1
|
3
|
3
|
5
|
|
- 0
|
7
|
8
|
6
|
|
|
5
|
4
|
9
|
So trade 1 thousand for
10 hundreds, giving 12 hundreds and leaving 0 thousands.
Now subtract each column
starting in the ones column.
15 – 6 = 9
12 - 8 = 4
12 – 7 = 5
1,335 - 786 = 549
|