Today, my father and I went to the supermarket. Dad took me to the street corner where vegetables were sold. We bought 2 Jin of cucumber, 1 Jin of tomato and 2 Jin of my favorite potato. On the way back, my father asked me, "There are just four cucumbers. There are three of us, but my mother went to Jinan. How many do we each eat? " Recalling the division I learned before, I said, "4 ÷ 2 = 2, everyone eats two." Dad asked again, "These four cucumbers cost 2 3 yuan cents each. How much is each cucumber? "

I thought about it and said, "3 yuan's 2 angles are 32 angles, and 32 ÷ 4 = 8, each of which is 8 angles." Dad nodded, smiled and said, "You're right!" Today, I am so happy! I bought my favorite vegetables and learned math knowledge. It's killing two birds with one stone!

Today, I made an appointment with my classmates to have a picnic outside. I went to the supermarket and bought a bottle of 5 yuan. A loaf of bread 2 yuan, buy three; A pack of beef jerky 3 yuan 6 jiao; A hillbilly chicken leg, 2 yuan. Aunt smiled and said to me, *** 15 yuan, I gave it to my aunt 15 yuan. When I walked out of the supermarket, I calculated: No, 5+2×3+3.6+2= 16.6 yuan, my aunt took 1.6 yuan, and I gave it back to her. Aunt said, "You are an honest boy"! Mathematics can also make me understand the truth of being a man. I'm so happy.