Listen to my mother: "On the first day of New Year's Day, my uncle, uncle and aunt will come to my house to see my grandmother and spend the New Year with us." So my mother and I bought a lot of vegetables, such as: bought two Jin of tomatoes, two yuan per Jin; I bought three Jin of wax gourd, one yuan per Jin; Long beans bought three Jin, two yuan per Jin; I bought two Jin of soybean sprouts, one yuan per Jin. At this moment, my mother asked me a question. Xinxin, you can use your math knowledge to calculate how much it will cost to buy food today. I smiled and told my mother that a * * * costs fifteen dollars. The formula is as follows.
. (2× 2)+(3×1)+(3× 2)+(2×1) =15 (yuan)
2. Buy mushrooms
Today, I followed my mother to the market to buy food. Mom said, "I will test you today. Will you buy a dish you like?" My mother gave me 20 yuan to watch my performance. "Make sure the task is completed." I said confidently.
So, I walked and watched, and came to the vegetable area. Seeing the tender and white fresh mushrooms makes my mouth water, because I like mushrooms best. Then buy mushrooms! I asked my aunt who sells vegetables, "Aunt, how much is a catty of mushrooms?" Aunt said: "7 yuan a catty. How much do you want, son? " "Two Jin." I think: If it is two kilograms, it is 274, which is exactly 14 yuan. Aunt should also call me 6 yuan. At this time, the aunt weighed it and said, "Little friend, it doesn't matter if you weigh two ounces or two ounces more." "This ..." How much is two ounces? How much should I give my aunt? While I was thinking, my mother came over. I'm a little embarrassed to see my mother, because I just boasted and now I can't figure it out. My mother told me, "Two Jin is 14 yuan, and two is 1 yuan.40" "Well, a * * * is 15 yuan 40 points." I blurted it out. I gave my aunt who sells vegetables 20 yuan, and my aunt gave me 4.60 yuan. I calculated again, just right, no more, no less.
Through this test, I feel that there are many mysteries of mathematics hidden in our lives, and the ability to learn mathematics is really important. And don't be proud. You should study hard and master more math skills in order to apply what you have learned and solve the problems around you.
I bought food with my parents this morning. We just arrived in front of the vegetable market and found traffic. There are many people in it, and it is very lively. The hawker's cries and the customer's bargaining voice sang a wonderful song. There are vegetables, meat, fruits and fish in the market. My mother and I came to the vegetable area first. There are all kinds of vegetables in the market. Colorful vegetables dazzle me. I took potatoes, cucumbers and bean sprouts first, my mother took tomatoes, Chinese cabbage and baby dishes, and my father took some chicken and ribs. Mother asked, "son, you are good at math." Please calculate how much we spent. " I said confidently, "It's very simple! Potatoes 1 yuan 6 jiao; Cucumber spent 4 yuan; Bean sprouts cost 2 yuan; Tomato 3 yuan 4 corners; Chinese cabbage cost 4 cents for 6 yuan; Doll dish took 8 yuan; Chicken spent 20 yuan; The ribs were spent in 50 yuan. The formula is:1.6+4+2+3.4+6.4+8+20+50 = 95.4 (yuan). So, we spent 95.4 yuan. " My mother praised me happily: "Son, you have a good mouth!" " "
During the summer vacation, my grandma and I often go out to buy food. The eighth vegetable market and trust-mart are the places we go most often. The vegetables we often buy are: bitter gourd, cucumber, tomato, egg and mung bean. At Trust-Mart, the prices of these things are as follows: a catty of bitter gourd is 0.98 yuan, a catty of cucumber 0.9 yuan, a catty of tomato 1.98 yuan, an egg 5.5 yuan and a catty of mung bean 7.8 yuan. The food bought in the eighth vegetable market is a little more expensive. A catty of bitter gourd, 2.0 yuan, cucumber 2.0, tomato 2.5, egg 5.5 and mung bean 8.5. If you buy these dishes at Trust-Mart, * * * wants 17. 16 yuan, and the eighth vegetable market wants 20.5 yuan, a difference of 3.34 yuan. Although the food in the eighth vegetable market is a little expensive, we still like to go to the eighth vegetable market. Because the food in the eighth vegetable market is fresh and delicious, it is expensive; Trust-mart products are older and less delicious, so they are cheaper.
In life, mathematics is everywhere. For example: buy food! Buy stationery! Measuring cloth, etc. , all need to use mathematics.
This semester, the teacher taught a new knowledge, that is, the multiplication and division of decimals. This knowledge helps me a lot!
Last night, my mother went to buy oranges together. A kilo of oranges 1.8 yuan. My mother bought 4.5 kg and should pay 8. 1 yuan. But the clerk was careless and didn't know how to calculate it, so it became 9 yuan money. Fortunately, this semester, I used the knowledge of Protestantism, and after doing a calculation in my mind, I immediately corrected the salesman's mistake.
Not only did my aunt, the shop assistant, praise me for my cleverness and my ability to multiply and divide decimals in such a small city, but my mother also praised me for saving her 0.9 yuan on the way home, and the knowledge I learned can be applied in my life.
Yes! If you don't learn this math well, it's not only 0.9 yuan that will lose, but also hundreds, thousands or even hundreds of millions! I hope you can adopt it! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !