Question 1. According to the formula: distance = speed × time, it can be concluded that the distance traveled by Xiaoming within 1 hour is 4× 1/6=2/3 (km).

This distance accounts for 2/3 of the whole journey, so the distance from Xiaoming's home to school is 2/3 ÷ 2/3 = 1 (km).

Question 2: 1 1: 10 equals11= 5/3. In the same way, it will take 3×1111* * to finish digging this canal.

Question 3: The number of winners accounts for 3/4 of the participants, so the number of winners is180× 3/4 =135;

Boys account for 3/5 of the winners, so there are 135×3/5=8 1 (person) winners.