On Sunday, my father and I went shopping.

When we came to the place where tomatoes were sold, my father asked, "How much is it?" The boss said, "1 yuan 2 jiao 1 kg." "I'll buy 3 Jin." Dad said. The boss weighs 3 Jin. Dad asked me, "Do the math, how much is a * * *?" I think: Easy, 1.2 times 3, isn't it equal to 3.6 yuan! I readily replied, "3.6 yuan." Dad said humorously, "Congratulations, you got it right!" " After dad paid the money, he went to the place where vegetables were sold. He asked, "How much is this cabbage? 1 kg? " The female boss said, "1 50 yuan." Dad asked me again, "I bought 2 Jin." Now I have 5 yuan money. How much should the boss give me back? " I think: 1.5 times 2 equals 3 yuan, and 5 yuan minus 3 yuan equals 2 yuan. "I replied," Looking for 2 yuan. " Dad said, "Yes! "

Walking out of the market, I suddenly realized that mathematics is often used in my life.