-10²×0,2

To solve this expression, we can follow the order of operations, which is Brackets, Exponents, Division and Multiplication (from left to right), and Addition and Subtraction (from left to right).

First, we have the exponent, which is -10². This means we need to square -10. -10² equals (-10) × (-10) = 100.

Now, we need to multiply the result by 0.2. 100 × 0.2 = 20.

Therefore, -10² × 0.2 equals 20.