Today, my family packed three large plates of hinges, and I counted 68 in one pot. At this time, my father asked me, "If there are six people eating, how much will each person get?" I wrote a formula: 3×68÷6. I thought: First of all, how many hinges does 3×68 have? I calculated vertically, and there are 204 hinges.

Math diary

Today, my grandmother and I went to the fields to pull out radishes. Grandma said, "There are 15 radishes in the field." I asked, "How much does one weigh?" Grandma said, "About seven or eight taels." Grandma asked, "If a catty of radish costs one yuan, how much can a * * * here be worth?" I calculated that if a radish weighs 8 times, then 15 radishes should weigh 15×8= 120. Grandma said, "10 is two = 1 kg." I said, "Then there are 12 Jin and 65430 Jin here.

Math diary

Today is Friday, and we had a mid-term exam in primary and secondary schools. Among them, there is a topic on the math test paper that I can't forget. The above topics are: 8 people go boating, 5 people can take the big boat, and the rent is 10 yuan; The boat can take three people and rent 6 yuan. Q: How can I rent a boat? How to rent it reasonably and why? My first thought was what the teacher said: "If you encounter such a problem, you should first look at how to rent a seat. Then, calculate how much it will cost? " I worked it out like this: first, a big boat and a small boat add up to just eight people, and then I worked out a * * * want 16 yuan. Then, I figured out if there was any other way, so I took a look. None of them were reasonable, and there were more seats. This shows that we should rent a big boat and a small boat.