Toán quốc tế
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Maria drew the following figures on square sheets of paper.
How many of these figures have the same perimeter as the square sheet of paper itself ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Patricia drives one afternoon at a constant speed to her friend. She looks at her watch as she leaves and when she arrives. In which position will the minute hand be when she has completed one third of her journey ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Johann stacks 1x1 cubes on the squares of a 4x4 grid. The diagram on the right shows how many cubes were piled on top of each other on each square of the grid. What will Johann see if he looks from behind ( hinten ) at the tower ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
36 children voted for five students from their class. Each child was only allowed to vote one. The winter received 12 votes, and the student placed last just 4 votes. If each student received a different number of votes, how many votes did the second placed student receive ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
A 1 x 1 x 1 cube is cut out of each corner of a 3 x 3 x 3 cube. The picture shows the result after the first cube is cut out. How many faces will the final shape have ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
How many pairs of two digit numbers have a difference equal to 50 ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
In the last game of the hockey match there were lots of goals. In the first half 6 goals were scored and the visiting team were leading. After the home team scored another three goals in the second half, they won the match. How many goals did the home team score in total ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Which of the figures below will cover the most dots when laid on the square shown on the right ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Matthias is catching fish. If he had caught three times as may fish as he has actually caught, he would have 12 more fish. How many fish has he caught ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Numbers are written in the 4 x 4 grid: any two numbers in neighbouring squares should have a difference of 1, that is squares that share an edge. The number 3 is already given. The number 9 will be used somewhere in the grid. How many different numbers will have been used once the grid is filled in completely ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
Two buttons with smiling faces and two buttons with sad faces are in a row as shown in the picture. When you press a button the face changes, and so do the faces of the neighbouring buttons. What is the minimum number of button presses needed so that only smiling faces can be seen ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
40 boys and 28 girls hold hands in a big circle. Exactly 18 boys give their right hand to a girl. How many boys give their left hand to a girl ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
If you start with three number, the “addition machine” produces three new ones by adding together each pair of two. For instance from the numbers {3, 4,6} the addition machine makes {10, 9, 7}. If you use the addition machine again these numbers become { 16, 17, 19}. We feed the three numbers { 20, 1, 3 } into the addition machine and let the machine calculate 2013 times. What is the biggest possible difference between two of the three resulting numbers ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
From an old model train set there are only idential pieces of track to use. Matthew puts 8 such pieces in a circle ( picture on the left ). Marten begins his track with 2 pieces as shown in the picture on the right. He also wants to build a closed track and use the smallest number of pieces possible. How many pieces will his track use ?
Hỏi lúc: 13-12-2018 14:36
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Câu hỏi của Vinastudy - Hệ Thống Giáo Dục Trực Tuyến - Toán lớp 5 | Học trực tuyến
2013 people live on an island. Some of these people are truthtellers and the others are liars. The truthtellers always tell the truth whereas the liars always lie. Each day one of the people says “ when I have left the island the number of truthtellers will be the same as the number of liars”. Then he leaves the island. After 2013 days there is no longer anybody living on the island. How many liars were living there to begin with ?
Hỏi lúc: 13-12-2018 14:36