① 2004: 226, 396, 733, 839
2009:303、462、780、986
② 1) table tennis group and chess group
2) Table tennis group and chess group
③ 1)7、 1、 12、7、9、 1、27.8
2) The main difference is (one is in the northern hemisphere and the other is in the southern hemisphere, so the temperature is different)
1)① There are 29 people in each class.
② Boys are 50% more than girls.
③ Girls are 6.8% less than boys.
2)①9、 16、 15 1
②20.6%
③ Answer: The number of gold medals increased in September ~ 165438+ 10, decreased in June ~1~ 65438+2, and increased in June.
④ Answer: I found in 1 that the number of gold medals in each session of China is more than that in Japan; It was found that the ninth session and Japan won 1 18 gold medals.
3) A: Game B, because the audience who sang B remained the same from the opening to the exit.
Answer: February is the worst and June is the best.
② Answer: 1 The best, and the worst in June.
March is the closest.
A: taller than children of the same age.
2 answer: heavier than children of the same age.
Answer: Yes, but I am overweight, so I should strengthen physical exercise.
May ② A: May is bigger.
(3) Answer: A market rose from 1 to May and fell from May to June; B city1~ continued to rise from June.
④ Answer: More than B city 100%.
⑤ In January, what percentage was A more than B?
(20-5)÷5
= 15÷5
=300%
A: 300% more than B.
Select questions ①, ②, ②, ④.
②4
③46、69