Question

Subtract 0.25×10raise to the power -8 from 1.25×10raise to the power-8

Answer 1

0.25×10raise to the power -8 = 0.000000025
1.25×10raise to the power-8 = 0.0000000125
0.0000000125 - 0.000000025 = 0.0000000100