Keywords: second grade of budding seed primary school

This article is applicable to: the second grade of primary school.

Composition source:

This 350-word composition is about the second grade of primary school. The title is math diary-Seed Germination. Everyone is welcome to contribute enthusiastically.

Math diary-Seed Germination

On the first day, I put 50 red beans and 50 mung beans in two cups filled with water.

The next day I went to observe and found that mung beans began to sprout. Of the 50 mung beans, 42 have germinated and 8 have not. Then the germination rate of mung beans is:

Germination rate of mung bean =× 100%

=0.84× 100%

=84%

On the third day, I observed that red beans also began to sprout. Of the 50 red beans, 46 have sprouted and 4 have not. Then the germination rate of red beans is:

Germination rate of red beans =× 100%

=0.92× 100%

=92%

I use the table statistics as follows:

kind

Number of test seeds

Number of germinated seeds

germination percentage

mung bean

50

Forty two.

84%

Red bean shrub

50

46

92%

By doing experiments, I firmly grasped the knowledge of germination rate. How's it going? Try it if you don't believe me.