The Chinese New Year is coming, of course, every household needs a messenger to bid farewell to the old and welcome the new-firecrackers. Legend has it that the sound of firecrackers can drive away disasters and bring good luck to people. No, my father and I went to buy firecrackers on New Year's Eve. When I got to the place where guns were sold, my father bought two hooks, one for forty dollars. As there was no change, I gave him a 100 yuan. * * * looking for 60 yuan. But when he was looking for change, he found two RMB 10, six 5 yuan, three 2 yuan and two RMB 1 yuan. I thought for a moment, a * * * is 58 yuan! I took the money to find him, and he asked for another two dollars.

Through this incident, I understand: be careful in daily life, or you may be cheated. Also, it is very important to learn math well!

Chapter II: Decimal Points in Life

My mother took me shopping tonight. I'll buy a math diary first. I see that the price is 1.2 yuan, which is exactly the decimal we learned the day before yesterday. But the ticket says 1.20 yuan. If the trailing zero is removed, it is the same, just like this: 1.2= 1.20. This is exactly what we learned today. There will also be decimals in the things I buy for the trip. Such as: potato chips 6.5 yuan, milk biscuits 1.3 yuan, good times laver 7.9 yuan.

Today, I see that decimals are used in many places in my life.

Chapter 3: Shopping

Today, my grandmother and I went to the store to buy daily necessities. I bought a bottle of shower gel 28 yuan first, then four pieces of soap and a piece of 3.5 yuan. When I went to check out, I calculated it. 42 yuan, I gave the cashier 100 yuan, and the cashier gave me 58 yuan.

Formula: 28+4X3.5=42 (yuan)

100-42=58 (yuan)