Skip to content / Đến nội dung
ThichHocToan.com

VTMO 2013 — Grade 6 — semifinal Question 10

VTMO · VTMO 2013 — Grade 6 — semifinal

Question 10

For each integer $30$ through $50$, subtract its units digit from its tens digit. Find the total.
  1. $15$
  2. $- 15$
  3. $5$
  4. $- 5$
  5. $0$