There are two formulas at both ends of 1.: number of trees = number of segments+1.

Title: A path is 32 meters long. Plant 1 tree every 8 meters on one side of this path. How many trees can be planted from beginning to end?

Answer: Number of segments: 32÷8=4 trees 4+ 1=5 trees.

2. formula of planting only one end: number of trees = number of segments

Plant trees on one side of a 20-meter-long path, only at one end. If you plant trees every 5 meters 1 tree, how many trees will be planted on one side of this path?

Answer: The number of trees: 20÷5=4.

3. There are different formulas at both ends: number of trees = number of segments-1.

Arbor Day is coming. Children plant trees on one side of a 72-meter-long path, every 9 meters 1 tree, but not at both ends. How many trees have been planted?

Answer: Number of segments: 72÷9=8 trees: 8- 1=7 trees.

Other algorithms:

1. If trees are planted at both ends of the tree planting line, the number of trees planted should be more than the number of segments to be divided 1, that is, the number of trees = the number of intervals+1.

2. If only one end of the tree planting line is planted with trees, then the number of trees is equal to the number of segments to be divided, that is, the number of trees = the number of intervals.

3. If no trees are planted at both ends of the tree planting line, the number of trees planted is less than the number of segments to be divided 1, that is, the number of trees = the number of intervals-1.

4. If trees are planted on both sides and ends of the tree planting route, the number of trees planted should be more than the number of segments to be divided 1, and then multiplied by 2, that is, trees = number of segments+1 and then multiplied by 2.