Keywords: Math life in the third grade of primary school

This article is suitable for: the third grade of primary school.

Composition source:

This composition is about 500 words in the third grade of primary school, and the topic is "Mathematics in Life". Everyone is welcome to contribute enthusiastically.

Mathematics in life

This day, I just came home from school and I was very hungry. I couldn't help watching my father make pancakes. I asked, "How long will it take?" I'm starving! "Dad didn't answer, so I was anxious:" When will it be ready? " Dad finally spoke: "Think about this problem yourself. It takes 2 minutes to bake a cake, but there are no more than two cakes in the pot. I always bake three cakes. You can do the math. "What does this have to do with mathematics? Alas, mathematics is everywhere. I sat in a chair and thought slowly.

I thought to myself: Turn these three cakes upside down, that is, turn 2×3=6. Such a simple question also tested me. I ran into the kitchen and said, "It takes six minutes, two minutes to bake a cake and six minutes to bake three cakes." Dad said, "How many minutes do you think it will take at the earliest?" Can't two pieces be branded together? "

I sat back in my chair in frustration, and then I thought: if two cakes are baked together, it takes two minutes to bake two cakes and another two minutes to bake one cake, so it is 2+2=4 minutes, which is two minutes less than before. I rushed into the kitchen excitedly, and I excitedly said to my father, "It takes 4 minutes to bake a * * *!" Dad thought about it and said, "Well, it's a little less, but it's not the fastest way." "There is the fastest way, how is it possible?" I asked. Dad smiled and said, "Think about it."

Just when I wanted to give up, my eyes suddenly lit up. By the way, you can put the first cake and the second cake in the pot at the same time. 1 minute later, take out the second cake, put the third cake, and turn the first cake over. Bake again 1 min, so that the first cake is ready. Take it out. Then put the reverse side of the second cake ... It took me 3 minutes, and I told my father the result. Father clapped his hands and applauded.

Mathematics is inseparable from life. If you study deeply and thoroughly, you will naturally find that mathematics is actually very useful.