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Any digit from zero to 9 can represent different values depending on its what?
These digits can be represented based on their Place Value Notation.
What is the binary of -16?
00001. 1 turns on the value it is occupying. The values of each digit are, 1,2,4,8,16,32,64...... I you tried to get away with just 4 digits you'de end up with 15. 1+2+4+8=15. You need to step up to the 5th digit wich is 16 and reset the other digits to 0 or off.
How many different values can be represented in 3 decimal digits?
If leading zeros are allowed (like 004 or 082), then there are 1000. Start with 000 and go to 999. If leading zeros are not used, then the lowest number is 100, so subtract off the first 100 numbers (000 through 099) so it's 900.
How are the values of the red digits in each number related?
They make the numbers invisible to the people at Answers.com, possibly.
What is front-end estimation in math?
When using front-end estimation, first you add the front-end digits. Then adjust by estimating the sum of the remaining digits. Then add the two values
