Second question: (5/8)*(3/4)= afternoon 15/32, one day 15/32+5/8=35/32. The total length is greater than 1. See if there is anything wrong with the question.
Question 3: 40*25*4=4000cm?
The fourth question:
First, put 30*( 1/6)=5 lemon-flavored jellies into a bag; then
(1) Paint red and blue in the 1/2 area of the disc, which represent strawberries and apples respectively.
(2) The red area is painted 3/4, and the blue area is painted 1/4, representing strawberries and apples respectively.
Question 5: It should be fair and just to decide the order of the competition. They can draw lots to decide the order. According to the statistical principle, the probability of their playing order is equal. So you can write 1, 2, 3 and 4 on a piece of paper and let them draw lots.
I hope it helps you.