What is the whole number portion of the decimal? (5.024) what is the decimal portion of the decimal? (176.261)

The whole number portion is always the number to the left of the decimal. In this case it is 5. You have to be careful what you say if you are working in scientific notation.

For your second question 0.261 is the decimal portion. If the only part present was 0.261,  then 0 is the whole number portion, believe it or not. Nice question. You can learn a lot from it.

mx+89b(-98)nb

step-by-step explanation:

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this