There are three questions in the first volume of sixth grade mathematics that can't be taught.

In 2002, there were 1263 academicians in China Academy of Sciences and China Academy of Engineering.

Among them, male academician 1 185. What percentage of academicians are women?

( 1263- 1 185)÷ 1263× 100%≈6%

There are 20 programs on the program: 4 dances, 3 sketches and 2 cross talks.

10 songs, 1 1 instrument solo. What questions can I ask? And answer

How much does dance occupy in the program?

4÷20= 1/5

From June 2003 to June 10, three green turtles appeared in Lamma Island, China.

Shenwan lays about 900 eggs, and the hatching rate is between 40% and 60%.

How many little green turtles can these eggs hatch?

900× 40% = 360 (only)

900×60%=540 (only)

These eggs can hatch 360~540 little green turtles.