597/10
10-3 in standard notation is 0.001
2.7 as an improper fraction is 27/10
8.7 = 87/10
48.9 x 10 to the 3rd power in scientific notation is 48.9 x 103In standard notation: 48,900
8.848*10 to the 3rd notation Well done! But that is not scientific (written) notation.
2478 and 9/10, which as an improper fraction is 24789/10
1,000
42.3 is already in its decimal notation but it can be written as 423/10 as an improper fraction.
87/10 IS a mixed fraction so you do not need to do anything to "convert" to a fractional notation.
5.601 x 10 to the 3rd
6,300