(102x10^5)(98x10^6)
18x10^-6 -20x10^-5
(7x10^12)(12x10^11)
8x10^8+85x10^7
3x10^5+22x10^4
(3x10^-5)(22x10^-4)
60x10^-3 - 2x10^-4
35x10^-5 - 4x10^-4
95x10^-5 - 3x10^-6
5x10^-10+12x10^-11
(2x10^3)(3x10^5)
2x10^3+3x10^4
(70x10^-3)(2x10^-4)
7x10^12+12x10^11
102x10^5 + 98x 10^6
16.5x10^8
0.6x10^9
94.7x10^-5
8.2x10^12
59.8x10^-3
3.2x10^4
16.2x10^-10
5.2x10^-5
1.40x10^-5
18.2x10^-5
6.6x10-8
108.2x10^6
.5x10^-4
8.4x10^24
9.996x10^14