5.10¹⁵

Điểm kiểm tra học kì 1 môn Toán của học sinh lớp 7b được ghi lại như sau:

a) dấu hiệu ở đây là gì? lớp 7b có bao nhiêu học sinh ?

b)lập bảng tần số, tính số trung bình cộng

c)Tìm mốt của dấu hiệu

d)Rút ra một số nhận xét

e)Vẽ biểu đồ đoạn thẳng

Write questions for the underlined words.

1.- The children swam in the lake.

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2.- The glass fell of the table.

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3.- They saw lions and tigers at the zoo.

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4.- He left the party at 11.o’clock.

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5.- John went to the beach last Sunday.

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6.- He gave her a bunch of flowers for her birthday.

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7.- The company sent the new worker to California.

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8.- My sister dreamt about the monster last night.

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9.- My grandmother heard a loud scream last night.

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10.- We went to the History Museum.

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11.- He fell because he slipped on a banana peel.

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12- The teacher was angry because he didn’t do his homework.

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13.- It took us about half an hour to get to school.

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14.- She last rode a bike two weeks ago.

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15.- I bought half a kilo of cheese.

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16.- He took his driving test two days ago.

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17.- He met Linda for coffee.

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18.- I was born in 1964.

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19.- My cousin started sailing six months ago.

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20.- I went to the cinema with my cousins.

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21.- I stayed in New Zealand for six months.

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22.- She called the firemen because her cat stuck in a tree.

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23.- I bought two kilos of oranges.

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24.- John wrote about his grandparents.

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25.- I watched a very good film on TV last night.

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26.- She made some coffee for her mother.

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27.- Susan gave the money to her brother.

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28.- We went to school by bus.

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29.- I was tired yesterday evening because I worked very hard.

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30.- Mary invited a lot of people to the party.

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31.- No, we didn’t go to the cinema last night.

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32.- Shakira grew up in Colombia.

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33.- He went on holiday with his friends.

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34.- She didn’t do anything.

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35.- I borrowed my teacher’s dictionary.

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36.- Someone gave some money to Mike.

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37.- Someone helped John with his homework yesterday.

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38.- Shakespeare died in 1616.

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39.- He didn’t dance at the disco because he was tired.

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40.- She left her suitcase on the train.

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la số 9 chắc 100%

Nửa P HCN mới là : 128 : 2 = 64 ( cm )

Nửa P HCN ban đầu là : 64 - 4 - 4 = 56 ( cm )

Chiều rộng HCN ban đầu là : 56 : ( 1 + 3 ) = 14 ( cm )

Chiều dài HCN ban đầu là : 56 - 14 = 42 ( cm )

P HCN ban đầu là : ( 14 + 42 ) x 2 = 112 ( cm )

Đáp số : 112cm

5+5+5+5+5+5=30