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 Liang 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.