2. In five numbers, -2, 3/4, -0.75, 75% and 2, (-2-0.75) are negative numbers, (34,2) are natural numbers, (0.75) are decimals, (75%) are percentages, and the equivalent value is (3/4).
3.8.6 consists of 8 (1) and 6 (0. 1), which can also be regarded as 860 (0.0 1).
4. The numbers 1, 2,7,15,29,51,48,60,11,(2,7,29) are prime.
On Sunday, Mr. Li and his wife took some pupils to visit Nanyang Zoo. Admission to the zoo is for 5 yuan, an adult, and 3 yuan, a pupil. It cost 22 yuan to buy tickets, so Miss Li and her lover brought four pupils.
6. The two-digit "2□" is the common multiple of 3 and 4, and the number in □ is (4). The least common multiple of this two-digit sum 16 is (48).
7. A five-digit 8□35△ is a common multiple of 2, 3 and 5, so the number represented by □ is (2) and the number represented by △ is (0).
8. It is known that a three-digit number 5 is a common multiple of 2, 3 and 5, and the maximum value of this three-digit number is (570).
9. △△△△ ☆★△△ ☆★△△△★ According to this arrangement, the 30th number from the left is (★), and the first 36 numbers are (18) △.
10, according to the law: 1, 1, 2,3,5,8,13,21? 10 should be (55).
1 1, 0,3,5,8 form a four-digit number (each number is used only once), which can form (18) different four-digit numbers, the largest of which is (8530).
12. Fill in the appropriate score in the box above the straight line, where A stands for () and B stands for (). (I can't do this problem ~)
13, the positions of corresponding points of a and b on the number axis are shown in the figure below, and then A () B (fill in ">", "
14. The elevation of Lake Qinghai in China is 3193m, and the sea level of the Dead Sea, the lowest sea in the world, is 400m below sea level. If the sea level is one meter, the lake level of Qinghai Lake can be recorded as (A+3 193) meters, and the sea level of the Dead Sea can be recorded as (A-400) meters.
15 and -2℃ are (4 )℃ lower than 2℃.
16, cyclic decimal1.1234812348 is simply written as (1.12348 (1.8 dotted)), and its decimal part is
17. Draw a diagonal line in the figure below to indicate the percentage below this figure. (can't do it)
18, the per capita green area of the city announced by the United Nations is16m2, the per capita green area of a town is1516m2, and the score unit of1516m2 is (). Only by adding such units as () can we reach the international per capita green area. Sorry, I can't understand the title. Some symbols have not been typed. )
19, the doctor advised a person to eat at most 5 grams of salt every day on average. Let's see: a bag of salt (500 grams) can be eaten for at least (20) days in a Lele family of five.
20. In the activity of "It is everyone's responsibility to protect the environment", the amount of used batteries collected by Zhang Ming is 2/3 that of Li Fang and 2/5 that of Lin Liang. If the number of waste batteries collected by Li Fang is 80 less than that of Liang Lin, then Zhang Ming has collected (80) waste batteries.
I made it together. Adopt it. Ask if you don't understand ~