My mother and I went to the zoo. When we got there, my mother and I went to buy tickets. Each ticket 16 yuan. For both of us, my mother took out 100 yuan. How much should I change? Let me do the math.

I can calculate by addition first: 16+ 16 = 32 yuan;

I can also use multiplication to calculate: 16×2, but I have never learned the multiplication of two digits. What should I do? After thinking about it, I can decompose 16 into: 10 and 6, and then multiply them by 2 to get 20 and 12, and then add these two numbers together, that is, 20+ 12 = 32 yuan;

Then use 100-30 = 70 yuan and 70-2 = 68 yuan, then you should find 68 yuan. My mother praised me for calculating correctly, and I have to settle accounts later.

We saw many animals and were very happy. The aquarium needs to buy tickets. Let me calculate. 5 yuan for everyone, my mother and I need: 5×2= 10 yuan. The performance of sea lions and seals is really wonderful. I want to take photos with sea lions and feed them! It cost 20 yuan to take pictures and 5 yuan to feed them. How much did you spend in the aquarium? 20+5+ 10 = 35 yuan. A * * * spent 35 yuan.

I'm hungry. Let's go to eat. I ate a string of squid and a marshmallow; Mother ate a cake with meat; My mother and I drank a bottle of fruit orange. A string of squid 1 yuan, a marshmallow 2 yuan, a cake meat 3 yuan and a bottle of orange 5 yuan.

Let me calculate how much money we ate:

1+2+3 = 6 yuan, 5× 2+6 = 16 yuan. We ate 16 yuan.

My mother and I took a cableway tour bus again, and I also played "Animal Wars" and "Bowling in the Water". Cableway car per person 10 yuan, "Animal Wars" 10 yuan, "Water Bowling" 25 yuan. How much did we spend?

10× 3+25 = 55 yuan. 55 yuan, we spent a lot of money.

It's getting dark. We're going home. I really had a good time. Let me figure out how much we spent: How much is 32 yuan +35 yuan+16 yuan +55 yuan? I calculated 35+55 = 90 yuan, 32+ 16 = 48 yuan, and then 90+48 = 138 yuan. We spent a total of 138 yuan. How much money we spent!