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Exam number 2: Choose the most suitable answer in 4 available answers.. (Cóc vàng tài ba)?[r]
(1)Đề thi Violympic Toán Tiếng Anh lớp vòng 10 năm 2014 - 2015 Exam number 1: Fill in the blank with the suitable sign (>, <, =)
Question 1: 4567/6789 3456/5678 Fill in the blank with the suitable number:
Question 2: Professor Ngo Bao Chau was born in 1972 He was born in the th century
Question 3: 1818/2727 of 2376 is Question 4: Find x such that: x + 17 x 12 = 216
Question 5: Three oranges are weighted in pairs and these weights are 400; 412; and 424 gram What is the weight of the lightest orange?
Answer: The weight of the lightest orange is gram
Question 6: The area of a rectangle increased by 57cm2 when each side increases by 3cm.
The perimeter of the origial rectangle is cm
Question 7: How many - digit numbers can you make by using only and 1? Answer: There are numbers
Question 8: Some men meet at a conference Each man shakes hands with each other exactly once If there are 4950 handshakes in total then the number of men is Question 9: In the equation: N x U x (M + B + E + R) = 33, six letters are distinct digits from to What is the greatest possible value of the number NUMBER?
Question 10: The sum of the digits of all 2-digit numbers is
Exam number 2: Choose the most suitable answer in available answers (Cóc vàng tài ba)
Question 1: Which of the following numbers can represent the question mark? a 48
b 45
c 54 d 36
Question 2: Which of the following numbers is divisible by 6? a 33332
(2)c 42378 d 12357
Question 3: Which of the following is the number 2,003,047? a Two million, three thousand, fourty seven
b Two million, thirty thousand, four seven c Two million, three thousand, four seven d Two million, thirty thousand, fourty seven Question 4: Find the value of
The value of A is
a 1007 b 4006/2015 c 2015 d 4002/2015
Question 5: Jonn uses 1/3 of his land for growing apples, 1/4 for oranges, 1/5 for bananas and the remaining 13 hectares for flowers The total area of his land is hectares
a 60 b 70 c 50 d 80
Question 6: Find the value of B = 2016 x 20152015 - 2015 x 20162015 Answer: The value of B is
a 2015 b 2016 c 20152016 d 20162015
Question 7: The product of natural numbers is 2015 Find the smallest possible sum of these two numbers?
Answer: The smallest possible sum of these numbers is
a 96b 65 c 408 d 2016
Question 8: Peter, Bob and Jack a work If they work in pairs: Peter and Bob can complete it in 12 hours; Bob and Jack can complete it in 10 hours; Jack and Peter can complete it in 15 hours Peter needs hours to complete this work by himself
a 18 b 40 c 24 d 42
Question 9: One chain with links is 14cm long Another chain made from links of the same type is 22cm long How long is a chain with 40 such links?
Answer: A chain with 40 such links is a 162cm long
b 158cm long
(3)d 155cm long
Question 10: Find the missing number x in the following number sequence:
2 18 25 x 57 114 121
Answer: x is
a 32 b 34 c 50 d 45
Exam number 3: Vượt chướng ngại vật
Question 1: Fill in the blank with the correct number 35km + 700cm = m
Question 2: 765 - = 123 x + 276
The correct number filled in the blank is
Question 3: How many triangles in the following figure? Answer: There
are triangles
Question 4: Find the value of digit x if 2006 < 20x5 < 2041 and 20x5 is divisible by 3?
Answer: The value of x is
12 17<
8 5+m<
21
23 Question 5: Find the greatest natural number m such that:
Answer: m =
Đáp án
Exam number 1: Fill in the blank with the suitable sign (>, <, =) Question 1: >
(4)Question 4: 12 Question 5: 194 Question 6: 32 Question 7: Question 8: 100 Question 9: 315420 Question 10: 855
Exam number 2: Choose the most suitable answer in available answers (Cóc vàng tài ba)
Question 1: a Question 2: c Question 3: a Question 4: a Question 5: a Question 6: a Question 7: a Question 8: b Question 9: a Question 10: c
Exam number 3: Vượt chướng ngại vật Question 1: 35007