1. The problem asks to evaluate 10 times four. 2. The operation "times" means multiplication. 3. The multiplication formula is $a \times b = c$, where $a$ and $b$ are numbers and $c$ is the product. 4. Here, $a = 10$ and $b = 4$. 5. Multiply 10 by 4: $$10 \times 4 = 40$$ 6. Therefore, the answer is 40.