We can easily subtract a big number from powers of 10 using vedic maths by following the steps given below.
We use all from 9 and last from 10 method for this.
For example
1) 1000 - 639 is as follows
1000 - 639 = 9- 9- 10-
6 3 9
3 6 1
ie: 1000 - 639 = 361
2) 10000 - 4529 = 9- 9- 9- 10-
4 5 2 9
5 4 7 1
ie: 10000 - 4529 = 5471
3) 1000 - 69 = 9- 9- 10-
0 6 9
9 3 1
ie: 1000 - 69 = 931
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