Which subtraction problem results in the smallest answer? Solve problems 8-12.

To find which subtraction will have the smallest answer, we can estimate or calculate the differences:

• $423 - 379 = 44$
• $515 - 468 = 47$
• $934 - 886 = 48$
• $456 - 375 = 81$
• $738 - 682 = 56$

The smallest answer is 44.
The subtraction with the smallest answer is $423 - 379$. This is because the two numbers, 423 and 379, are closer to each other than the numbers in the other subtraction problems.

$$423 - 379 = 44$$

The answer is $\boxed{\text{44}}$.

$$515 - 468 = 47$$

The answer is $\boxed{\text{47}}$.

$$934 - 886 = 48$$

The answer is $\boxed{\text{48}}$.

$$456 - 375 = 81$$

The answer is $\boxed{\text{81}}$.

$$738 - 682 = 56$$

The answer is $\boxed{\text{56}}$.