Вопрос школьника по предмету Математика
Сколько из дробей 2/6,5/15,8/25,10/30,3/5,3/5 равны ?Запишите равные дроби сокращая их.
Ответ учителя по предмету Математика
2/6=1/3
5/15=1/3
8/25=8/25
10/30=1/3
3/5=3/5
3/5=3/5
Сколько из дробей 2/6,5/15,8/25,10/30,3/5,3/5 равны ?Запишите равные дроби сокращая их.
2/6=1/3
5/15=1/3
8/25=8/25
10/30=1/3
3/5=3/5
3/5=3/5
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The Russian Federation
1The Russian Federation is the largest country in the world. 2It occupies about one-seventh of the earth’s surface. 3It covers the eastern part of Europe and the northern part of Asia. 4Its total area is about 17 million square kilometres.
5The country is washed by 12 seas of 3 oceans: the Pacific, the Arctic and the Atlantic. 6In the south Russia borders on China, Mongolia, Korea, Kazakhstan, Georgia and Azerbaijan. 7In the west it borders on Norway, Finland, the Baltic States, Byelorussia and Ukraine. 8It also has a sea-border with the USA.
9There is hardly a country in the world where such a variety of scenery and vegetation can be found. 10We have steppes in the south, plains and forests in the midland, tundra and taiga in the north, highlands and deserts in the east.
11There are two Great Plains in Russia: the Great Russian Plain and the West Siberian Lowland. 12There are several mountain chains on the territory of the country: the Urals, the Caucasus, the Altai and others. 13The largest mountain chain, the Urals, separates Europe from Asia.
14There are over two million rivers in Russia. 15Europe’s biggest river, the Volga, flows into the Caspian Sea. 16The main Siberian rivers — the Ob, the Yenisei and the Lena — flow from the south to the north. 17The Amur in the Far East flows into Pacific Ocean.
18Russia is rich in beautiful lakes. 19The world’s deepest lake (1600 meters) is Lake Baikal. It is much smaller than the Baltic Sea, but there is much more water in it than in the Baltic Sea. 20The water in the lake is so clear that if you look down you can count the stones on the bottom.
21Russia has one-sixth of the world’s forests. 22They are concentrated in the European north of the country, in Siberia and in the Far East.
23On the vast territory of the country there are various types of climate, from arctic in the north to subtropical in the south. 24In the middle of the country the climate is temperate and continental.
25Russia is very rich in oil, coal, iron ore, natural gas, copper, nickel and other mineral resources.
26Russia is a parliamentary republic. 27The Head of the State is the President. 28The legislative powers are exercised by the Duma.
29The capital of Russia is Moscow. 30It is its largest political, scientific, cultural and industrial centre. 31It is one of the oldest Russian cities.
32At present, the political and economic situation in the country is rather complicated. 33There are a lot of problems in the national economy of the Russian Federation.
34But in spite of the problems Russia is facing at present, there are a lot of opportunities for this country to become one of the leading countries in the world.