VTMO 2026 - Grade 4 - Semifinal - SET 12 - Self-study Question 17

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

Question 17

Calculate $180-175+175-170+170-165+\cdots+110-105+105-100$.

1. 180
2. 140
3. 100
4. 80
5. 40