The area of Jiangsu Province is about 100000 square kilometers, and that of Anhui Province is about 150000 square kilometers (1) How much is Anhui Province larger than Jiangsu Province? (2) How much smaller is Jiangsu Province than Anhui Province?

I'm child 074,
(1) How much is Anhui Province larger than Jiangsu Province?
（15－10）÷10＝50%
(2) How much smaller is Jiangsu Province than Anhui Province?
（15－10）÷15≈33.3%

How many square kilometers is the area of Jiangsu Province

102600 square kilometers

Cut the cuboid 20 meters long, 10 meters wide and 10 meters high into two cubes. How much more is the surface area than the original cuboid

Split the side of 20 meters into 10 meters + 10 meters
The extra area is multiplied by width by height, and then by two
10*10*2=200

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