To multiply= 96X97

subtract each number from 100

96X97

4 3

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subtract diagnoly 96-3 或者 97-4

ans will be same=93

multiply the no. 4X3=12

=9312

TO multiply= 18X32

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subtract each number 由 30 或者 20

(30) (20)

18X32 18X32

12 2 2 12

now multiply 12X2 which is equal to 24

and 20X30=600

subtract 600-24=576

answer is 576

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subtraction

7254

- 3857

ANS=3357

how do we get this..

take 7 from10

then add the number

(4 to get 7)

subtact from power 10 .

subtract all number like this..

TO subtract 40,000 from 2,745

-take 1 from the digit(4)

to get3,the first digit..

TO SUBTRACT 1000 from574

-this is the right hand digit of the answer

- now take the other digits away from 9.Take 1 from the first digit.

-4 from 10 is 6,7 from 9 is 2,5 from 9 is 4 and 1 from is 0

Therefore the answer is 426