VTMO 2026 - Grade 4 - Semifinal - SET 12 - Self-study Question 12

Use each of the digits 2, 3, 4, 5, 6, 7 and 8 exactly once to form the numbers $\overline{UVW}$, $\overline{XY}$ and $\overline{MN}$. What is the smallest possible value of $\overline{UVW}-(\overline{XY}+\overline{MN})$?