a.4 13× 10^2 b.4 1.3× 10^3 c.4. 13× 10^4 d.0.4 13× 10^3
2.(20 12? Yichang) 2065438+On April 30th, 2002, China successfully launched two Beidou navigation satellites in xichang satellite launch center with the Long March 3B carrier rocket, of which the geostationary orbit satellite is about 36000km. Tall. This data is expressed in scientific notation as ().
a.36× 10^3km b.3.6× 10^3km c.3.6× 10^4km d.0.36× 10^5km
3.(20 12? Zigong) Zigong has a population of about 3.3 million, which is expressed by scientific notation as ().
a.330× 10^4 b.33× 10^5 c.3.3× 10^5 d.3.3× 10^6
4.(20 12? Yulin) calculation: 2 2 = ()
A. 1
5.(20 12? Xiangyang) Li Yang entered "Charming Xiangyang" in Baidu search engine, and the number of related results was about 236 000, which was expressed as () by scientific notation.
a.2.36× 10^3 b.236× 10^3 c.2.36× 10^5 d.2.36× 10^6
6.(20 12? Xiangyang) The absolute value of a number is equal to 3, and this number is ().
a . 3 B- 3 c . 3d . 1/3
7.(20 12? Xiantao Tianmen Qianjiang Jianghan) Smoking is harmful to health. According to a report by CCTV on May 30th, 20th12nd, the number of deaths caused by smoking in the world is about 6 million, and the data of 6 million is expressed as ().
a.0.6× 10^7 b.6× 10^6 c.60× 10^5 d.6× 10^5
8.(20 12? The reciprocal of Zigong's |-3| is ()
A.-3 B.- 1/3 C.3 D. 1/3
9.(20 12? Zhanjiang) 20 12 On May 24th, the National Development and Reform Commission approved the project of Zhanjiang Iron and Steel Base in Guangdong Province, which was invested and constructed by Baosteel Zhanjiang Iron and Steel Co., Ltd., with an estimated annual output of 10200000 tons of steel. The data of 1020000 is expressed as () by scientific notation.
a. 102× 10^5 b. 10.2× 10^6 c. 1.02× 10^6 d. 1.02× 10^7
10.(20 12? The absolute value of Yangzhou) -3 is ()
A.3 B.-3 C.-3D. 13
1 1.(20 12? Xuzhou) 20 1 1 Xuzhou received about 24.8 million domestic and foreign tourists, which was expressed as () by scientific notation.
a.2.48× 10^7 b.2.48× 10^6 c.0.248× 10^8 d.248× 10^5
12.(20 12? The inverse of Yunnan) 5 is ()
A. 1/5 B.-5 C.- 1/5 D.5
13.(20 12? The reciprocal of Yibin) -3 is ()
A. 1/3 B.3 C.-3 D.- 1/3
14.(20 12? The reciprocal of Yiwu) -2 is ()
a . 2b-2c . 2d- 1/2
15.(20 12? Xining) 20 12 on may 28th, China's "detailed rules for the implementation of the promotion of energy-efficient room air-conditioning project benefiting the people" was released. According to AVC data, the new energy-saving subsidy policy can directly drive the sales of air-conditioning terminals to reach 1.30 billion yuan. So the approximate number of 1.030 is ().
a . 1 b . 10 c . 1.0d . 1.03
16.(20 12? The inverse of Zhangjiajie) -20 12 is ()
A.-20 12 b . 20 12 c .- 1/20 12d . 1/20 12
17.(20 12? Xiaogan) In China, the energy obtained from the sun in one year is equivalent to the energy generated by burning130,000 tons of coal. 130000 is expressed by scientific notation as ().
a. 13× 10^4 b. 1.3× 10^5 c.0. 13× 10^6 d. 1.3× 10^8
18.(20 12? Yongzhou) If you use some kind of electronic calculator used in junior high school math textbooks to calculate, the result of pressing the key is ().
3^2+2^3=?
A. 16
19.(20 12? The value of Zunyi) -(-2) is ()
A.-2b 2c 2d 4
20.(20 12? Zunyi) According to relevant data, the total fiscal revenue of Zunyi City in 20 1 1 year is 20.2 billion yuan, which can be expressed by scientific notation ().
a.2.02× 10^2 b.202× 10^8 c.2.02× 10^9 d.2.02× 10^ 10
2 1.(20 12? Yongzhou) is called a real number, then the following four numbers must be non-negative real numbers ().
a a B- a c |-a | d .-|-a |
22.(20 12? The inverse of Xianning) -8 is ()
A.-8 B.8 C.- 18 D. 18
23.(20 12? Chongqing) Four numbers -3,-1, 0, 2, the smallest number is ().
A.-3 B.- 1 C.0 D.2
24.(20 12? Zhanjiang) The reciprocal of 2 is ()
A.2 B.-2 C. 1/2 D.- 1/2
25. The absolute value of-2 is ()
A.2 B.-2 C. 1/2 D.- 1/2
26.(20 12? Xinjiang) 201May 12, a second-class football league between Xinjiang and Tianjin was held in Xinjiang. There are as many as 35,000 fans on the scene. It is correct to use scientific notation to represent 35000 ().
a.3.5× 10^3 b.3.5× 10^4 c.35× 10^3 d.0.35× 10^5
27.(20 12? 20 12 The number of junior high school students in a city is about 230,000. The number 230,000 is expressed as () by scientific notation.
a.23× 10^4 b.2.3× 10^5 c.0.23× 10^3 d.0.023× 10^6
28.(20 12? The absolute value of Yiyang) -2 is equal to ()
1/2 D. 2
29.(20 12? Zhaoqing) uses scientific notation to represent 5700000, which is correct ()
a.5.7× 10^6 b.57× 10^5 c.570× 10^4 d.0.57× 10^7
30.(20 12? Zhaoqing) The result of calculating -3+2 is ()
A. 1 B.- 1 C.5 D.-5
Reference answer
1-5 ccdccc 6- 10 CBD da 1 1- 15 ABDAC 16-20 BBBBD 2 1-25 CBA ca 26-30 BBA ab
They are all real questions in the senior high school entrance examination. Please adopt them.