The math composition of the sixth grade of life 1 is in class, and the math teacher swaggered into the classroom, wearing a floral little red skirt.
The classroom was quiet, and Li Tiantian, the vice monitor, brought the lesson plan to the teacher. The theme of this class is "Application Problems in Life". The math teacher has been preparing for this lesson for more than half a month. The lecture table is covered with lesson plans, and each lesson plan is full of words.
This class is going well. The bright red skirt of the math teacher adds a touch of luster to the gloomy classroom, and the students are particularly energetic under the influence of the teacher.
All the content has been taught, but there are still ten minutes before class is over. The math teacher won't waste any study time. So she asked everyone to design an application problem and let other students solve it.
Some students have already designed the topic, and the small hands in the class gradually merged into a small forest like a small tree.
"Yang Mingwei, tell me about your own topic." The teacher smiled at the monitor Yang Mingwei. Yang Mingwei stood up, shook his curly hair, and said forcefully, "My father went to the hotel to treat me yesterday and opened two bottles of Maotai, one bottle 1800. How much did my dad spend on a * * *? "
"Jason, you answer."
Jason shook his white teeth and stood up with a crescent-shaped smile: "The monitor's father spent 5600 yuan."
"no!" Yang Mingwei stood up with a "flop" and stared sharply at Jason. "My dad went to the city government to stamp a chapter and didn't spend a penny."
Right, right! The teacher broke her promise. How could she forget that the monitor's father is a municipal government cadre? Forget it, the teacher invited Jason to talk about his topic again. Zhang Jie's family is a small enterprise, so there should be no problem.
Jason gnashed her teeth again: "Listen, my problem is that my dad sells 60 fried dough sticks every day, and it costs 10 liter of oil, at 7 yuan per liter. How much does my dad spend on gas a month? "
"Teacher, Jason's question is not accurate." The little nerd in the class stood up. He pushed his thick glasses. "Who can say that Jason's father must sell 60 yuan a day? It may be 59 or 6 1! "
"Well, it should be the average." The teacher is a little embarrassed.
"So if it is calculated by 30 days per month, Jason's father spent 2 100 yuan a month."
"Great, the calculation is fast!" The math teacher gave a thumbs-up sign.
"Wrong!" Jason giggled. "My dad doesn't need so expensive hardcover oil. He went to the market to buy some blended oil, only two yuan a liter, and only spent 600 yuan a month! "
"Jingle bell ..." The bell rang at last. The math teacher "escaped" from the classroom before the monitor called "class dismissed".
In fact, the most difficult application problem is society.
In life, all kinds of things can be changed from an ordinary trivial matter to a vivid and thought-provoking math problem. The application problems we often do are those based on daily life and slightly adapted. "Mathematics comes from life and also serves life." The following are some of my personal experiences, all of which prove that this is a truth.
Once, my parents and I went shopping in RT Mart supermarket. My mother said, "We have run out of laundry detergent at home. I want to buy a bottle today. " I was dumbfounded when I walked to the shelf of cleaning supplies. There are many brands of laundry detergent, including several brands with different specifications. Looking for a home brand, I found that there are three specifications: the first is the price tag of 500 grams +03.8 yuan, the second is the price tag of 1.25 kg, and the third is the price tag of 2 kg. I'm considering which one to buy. It suddenly occurred to me that the average method in mathematics was used to calculate the unit price per kilogram of various specifications, and then the unit price was compared. The one with low unit price is more affordable. I calculated that the first unit price was 27.6 yuan, the second unit price was 27.04 yuan, and the third unit price was 26.4 yuan. I resolutely recommended my mother to buy a 2 kg bag. My mother said, "Why?" So I calculated it.
When we finished buying what we needed, we were about to leave. I saw sausages on the shelf, so I asked my father to buy some sausages. My father agreed. But just after a few steps, I saw a package with the same brand and weight on the shelf, which contained 10 pieces at 4.30 yuan each. Do you want to buy a pack or a slice? Suddenly, my mind turned and I understood. I just need to compare it mathematically to see which one is cost-effective. So I began to count: If I buy 65,438+00 retail pieces, each piece costs 4 cents, and * * * is 4 yuan, while the whole package costs 4.30 yuan, which is 3 cents more, so I decided to buy bulk. I told my father about my calculation process, and my father praised me for using my brain, so I became my father's "little accountant".
Mathematics is mysterious and flexible, and there are many kinds of mathematics in life! So mathematics can be applied to real life to solve practical problems. You see, a little thing in life can also become a math problem. Mathematics is everywhere. Let's love math and learn it well!