Do you mean 1.9 x 10^4 ?
(3 x 100) + (2/10^1) + (9/10^2)
70 = (7 x 101) + (0 x 100)
(7x10^3)+(3x10^2)+(7x10^1)+(5x10^0)
587 = (5 x 102) + (8 x 101) + (7 x 100)
10+8+40/10
2x10^6
81.402 in expanded form using the powers of ten = (8 x 10^1) + (1 x 10^0) + (4/10^1) + (0/10^2) + (2/10^3)
Do you mean 1.9 x 10^4 ?
820.681+10
not exactly sure what you're asking but 98364 = 9.8364 x 10^4
(3 x 100) + (2/10^1) + (9/10^2)
(9 x 100) + (3/101) + (5/102)
70 = (7 x 101) + (0 x 100)
4309 * 10^-3 4*10^0 + 3*10^-1 + 0*10^-2 + 9*10^-3
(7x10^3)+(3x10^2)+(7x10^1)+(5x10^0)
587 = (5 x 102) + (8 x 101) + (7 x 100)