1. Arithmetic solution of ancient poetry application problems 1. There are countless chickens and rabbits in the same cage, and 35 heads are exposed in the cage. It seems to have 94 feet, and there are many chickens and rabbits. The solution assumes that rabbits are biped on the ground, the number of feet on the ground is 35X2-70, and there are 94-70-24 (feet) in the sky, so the number of rabbits is 20. The number of chickens is 35- 12=23 (only). 2. Monks are divided into 100 steamed buns and 100 monks, and there is no dispute about the three big monks. Three little monks are divided into one, and there are several big monks. According to the poem, four steamed buns are just four monks, one of whom is a big monk and three are small monks, so there are 100+4-25 big monks. I don't know the number of crow trees. Three are sitting on a tree, five are not going anywhere, five are sitting on a tree, and one is idle. Can you count the number of crow trees you see? The tree is (5+5)-(5-3)-5 (a tree), and the crow is 3×5+5 = 20 (only).