A. 150
B. 120
C. 200
D. 210
🧠 Explanation:
Given 543 × 21 = 11403, then 11403 ÷ 5.43 = 210. Since 5.43 = 543 ÷ 100, dividing 11403 by 5.43 is like (11403 × 100) ÷ 543 = 21 × 100 ÷ 10 = 210. This helps students practice division and understand how to handle decimals in math problems.
