Đề thi toán tuổi thơ toàn quốc TH 2017 V2 - Du lịch toán

In the following figure, ABCD, CEFG and DGMN are squares.[r]

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CUỘC THI CÂU LẠC BỘ TOÁN TUỔI THƠ TOÀN QUỐC 2017

CHILDREN’S FUN MATHS JOURNAL NATIONAL COMPETITION 2017

ĐỀ THI TIỂU HỌC PRIMARY SCHOOL PAPER VÒNG 2: DU LỊCH TOÁN HỌC

ROUND 2: MATHEMATICS TOUR

Thời gian: 30 phút cho cả 6 câu hỏi Duration: 30 minutes for 6 problems

Đội (Team):……… Tỉnh/Thành phố (City/Province): ……… Date: 05.06.2017

Problem 1 It takes 15 machines 15 minutes to make 500 raviolis The

machines produce raviolis at a steady rate How long would it take 45 of

these machines to make 3000 raviolis?

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Problem 2 Find the 3th number (from left to right) of the 12th row in the

number pattern below

Trả lời (Answer):

………

_

Giám khảo (examiner)

(Ký, ghi rõ họ tên)

(Sign and write full name)

Điểm (Mark):

………

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Problem 3 How many 5-digit numbers are there whose all 5 digits are

even?

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Problem 4 The figure, which is not drawn to scale, is made up of a

rectangle A, a rectangle B and a square C The rectangles A and B are

identical The length of the rectangle B is twice the side of the square C The

area of the square C is half the area of each rectangle Find the area of the

figure

………

_

Điểm (Mark):

………

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Problem 5 A shop has a long piece of cloth On the first day, it sold 62.5%

the length of the cloth at a price of 20 000 VND per meter and got 200 000

VND as profit On the second day, it sold the remaining portion at a price of

19 000 VND per meter and got 90 000 VND as profit What is the length of

the cloth in meters?

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Problem 6 In the following figure, ABCD, CEFG and DGMN are squares

If AB = 12 cm and MN = 8 cm What is the area, in cm2, of the triangle

AME?

………

_

Điểm (Mark):

………

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