Ask my elder brother and sister some fifth grade math questions. You must answer them, 1. The height of the French tower is 320 meters. The height of the tower model in Beijing World Park is only 10% of the original tower. How many meters shorter is the model than the original tower? 2. After Xiao Ming's house replaced the water-saving toilet, he used 8 cubic meters of water every month, 20% less than before. How many cubic meters of water did he use every month? 3. The content of protein in soybean is about 36%, and carbohydrate is about 25%. How many grams of protein is heavier than carbohydrate in 500g soybean? If you want a formula, you don't have to count,

Ask my elder brother and sister some fifth grade math questions. You must answer them, 1. The height of the French tower is 320 meters. The height of the tower model in Beijing World Park is only 10% of the original tower. How many meters shorter is the model than the original tower? 2. After Xiao Ming's house replaced the water-saving toilet, he used 8 cubic meters of water every month, 20% less than before. How many cubic meters of water did he use every month? 3. The content of protein in soybean is about 36%, and carbohydrate is about 25%. How many grams of protein is heavier than carbohydrate in 500g soybean? If you want a formula, you don't have to count,

1. 320 * (1-10%) = 288M
2. 8 divided by (1-20%) = 10 cubic meters
3. 500 * (36% - 25%) = 55g

() / 16 = 3 = 9 = 3 * 5 = () (decimal)
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8（ ）8+（ ）

Horizontal filling: 6 24 32 0.375