A report released by the Population Resources Institute, a non-governmental organization, on June 1 1 2000 said that by the middle of the 20th century, the world population will reach 9 billion. The f

A report released by the Population Resources Institute, a non-governmental organization, on June 1 1 2000 said that by the middle of the 20th century, the world population will reach 9 billion. The following is the project. (1)12800000 = 65438+28 million ≈ 65438+30 million (accurate to 0. 1)

(2)162000000 = 65438+62 million ≈ 65438+60 million (with one decimal place reserved)

(3) 222000000 = 222 million ≈ 220 million (accurate to 0. 1)

(4) 296000000 = 296 million ≈ 300 million (accurate to the tenth place)

(5)130000000 =1300 million.

So the answer is: 1.28,1.3; 1.62, 1.6; 2.22,2.2; 2.96,3.0; 13.