Question

$$10 - 5 \times 10 - 8 \times 10 6 \times ( - 1 ) 3 10 - 4 \times ( - 1 ) 8$$

Answer 1

$$\textbf{Step 1: Solving Multiplications first.}$$

$$10-5\times10-8\times106\times(-1)310-4\times(-1)8$$$$=10-{5×10}-{8×106×(-1)×310}-{4×(-1)×8}$$

$$=10-50-(-262880)-(-32)$$

$$\textbf{Step 2: Resolving signs.}$$

$$10 - 5 \times 10 - 8 \times 10 6 \times ( - 1 ) 3 10 - 4 \times ( - 1 ) 8$$$$= 10-50-(-262880)-(-32)$$

$$=10-50+262880+32$$ $$\mathbf{[\because (-)×(-)=(+)]}$$

$$\textbf{Step 3: Solving the expression from left to right.}$$

$$10 - 5 \times 10 - 8 \times 10 6 \times ( - 1 ) 3 10 - 4 \times ( - 1 ) 8$$$$=-40+262880+32$$

$$=262840+32$$

$$=262872$$

$$\textbf{Hence, }\mathbf{10-5×10-8×106×\left(-1\right)310-4×\left(-1\right)8 = 262872}$$