Question

My son need help with number 4 and 5 can someone help him

Answer 1

28,302,603 in standard word form is: twenty-eight million three hundred two thousand six hundred three.

Answer 2

one hundred million = 100,000,000

15,146,481  plus  100,000,000 = 115,146,481


28,302,603 =
               "twenty-eight million three hundred two thousand six hundred three"