#### Answer

91

#### Work Step by Step

If you follow the order of operations, to simplify you must solve the exponents first, then divide and multiply, and finally subtract from left to right.
10$^2$-100$\div$5$^2$$\times$2-1
(100)-100$\div$(25)$\times$2-1
100-(4)$\times$2-1
100-(8)-1
(92)-1
91