今天，爸爸叫我去买一瓶辣酱，一瓶豆腐乳还有一袋红醋和四个奶糕。给了我20元，并叮嘱我要把钱算对了。
Today, my father asked me to buy a bottle of hot sauce, a bottle of tofu milk, a bag of red vinegar and four milk cakes. He gave me 20 yuan and told me to count the money correctly.
我来到商店，看见了辣酱7。6元，红醋1元我一加是8。6元。我又找到了豆腐乳3。3元。
I came to the shop and saw chili sauce 7. Six yuan, one yuan of red vinegar is eight yuan. 6 yuan. I found tofu 3 again. 3 yuan.
“8。6+3。3，等于11。9。20在减11。9。把20看成20。0，0减9不够借位，20借一位19减11等于8，10减9是1。售货员该找我8。1元。”我嘴里嘀咕这。因为不好拿我用1角买了个塑料袋儿。我还有8元，一个雪糕5角4乘5是20角等于两元。买了这么多东西我就剩6元了。
回到家我把钱给妈妈，妈妈夸我聪明。我一听心里美滋滋的。
When I got home, I gave money to my mother, who praised me for being smart. I'm happy to hear that.