Skip to content / Đến nội dung
ThichHocToan.com

HKIMO 2026 Grade 4 National Preliminary Set 02 Question 9

HKIMO · HKIMO 2026 Grade 4 National Preliminary Set 02

Question 9

Find the value of $100-99+98-97+\cdots+4-3+2-1$.
  1. 100
  2. 50
  3. 25
  4. 75