How to find 10's complement of decimal number

math decimal decimal-point complement number-systems
user5011938 picture user5011938 · Jul 19, 2015 · Viewed 26.9k times · Source

Whats the 10's complement of 1056.074?

Please check the solution:

9999.999 - 1056.074 = 8943.925 (9's complement of 1056.074)

Now 1 is added to .074 or 8943?

Answer

Am_I_Helpful picture Am_I_Helpful · Jul 20, 2015

Actually I missed a point mentioning in the comment, so I am adding it here. It will help the future visitors at least.

As you have correctly calculated the 9's complement of 1056.074, which is equal to [(104) - (1*(10-3))] - 1056.074 = 9999.999 - 1056.074 = 8943.925.

Now, as you have to calculate the 10's complement of the number, so 1 has to be added to the decimal(floating point) end at the LSB, not to the number itself, so that it preserves the 10's complement rule.

So, 10's complement of the number = 9's complement of the number + 0.001(i.e.,1 is added only to the LSB part) = 8943.926.

Related questions

to_d to always return 2 decimals places in ruby

I'm dealing with currencies and I want to round down the number to 2 decimal places. Even if the number is 500.0, I would like it to be 500.00 to be consistent. When I do "500.00".to_d it converts it to 500.0. Whats a …

Read More
In Java how do you convert a decimal number to base 36?

If I have a decimal number, how do I convert it to base 36 in Java?

Read More
Why does adding two decimals in Javascript produce a wrong result?

Possible Duplicate: Is JavaScript’s Math broken? Why does JS screw up this simple math? console.log(.1 + .2) // 0.3000000000000004 console.log(.3 + .6) // 0.8999999999999999 The first example is greater than the correct result, while the second is less. ???!! How do you fix this? Do you …

Read More