Exam number 1: Đi tìm kho báu
Question 1: There are 40 students in Mrs. Brown's class. 25% of her students received a B on the test. How many students received a B?
a. 10 b. 12 c. 18 d. 20
Question 2: What is the product of 3.05 and 2.8?
a. 8.54 b. 8.056 c. 8.56 d. 8.054
Question 3: A clothing shop is having a 40% off sale. How much would Jane have to pay for a $30 sweater with a 40% discount?
a. $18 b. $20 c. $50 d. $13
Question 4: If a pen costs $1.75 and an eraser costs $0.85, which of the following is the cost of 10 erasers and 5 pens?
a. $21.75 b. $26 c. $18.75 d. $17.25
Question 5: If the area of the rectangle ABCD is 60cm2 then the area of the trapezoid MNCD is ..........cm2.
![Đề thi Violympic toán tiếng anh lớp 5](https://s.vietnamdoc.net/data/image/2016/03/04/de-thi-violympic-toan-tieng-anh-lop-5-vong-8-a.png)
a. 48 b. 50 c. 45 d. 54
Exam number 2: Tìm cặp bằng nhau
![Đề thi Violympic toán tiếng anh lớp 5](https://s.vietnamdoc.net/data/image/2016/03/04/de-thi-violympic-toan-tieng-anh-lop-5-vong-8-b.jpg)
Exam number 3: Fill in the blank with the suitable number
Question 1 The length of each edge of a cube is 3 cm. The surface area of the cube, in cm2, is .............
Question 2: At the beginning of the summer, Bob was 140 cm tall. At the end of the summer, he measured his height again and discovered that it had increased by 5%. Measured in cm, what was his height at the end of summer?
Question 3: The number of centimetres in 7.05 metres is ...............
Question 4: Bella scores on six of her eight pictures. The percentage of pictures that she does not score on is .........%.
Question 5: A bag contains green marbles and red marbles only. If the ratio of the number of green marbles to the number of red marbles is 1:4 then ............% of marbles are green.
Question 6: How many even numbers between 1 and 100 are divisible by 5?
Question 7: Alice is going to the store. One third of the way to the store, she stops to talk with Kelly. She then continues for 6 km and reaches the store. How many kilometres does she travel?
Question 8: How many three-digit numbers are exactly 19 more than a two-digit number?
Question 9: In the 3×3 table shown, the numbers 2, 4 and 6 are placed so that each number occurs only once in each row and only once in each column. The value of M + N is ............
![Đề thi Violympic toán tiếng anh lớp 5](https://s.vietnamdoc.net/data/image/2016/03/04/de-thi-violympic-toan-tieng-anh-lop-5-vong-8-c.png)
Question 10: How many different 3-digit whole numbers can be formed using the digits 4, 5, 0 and 8, assuming that no digit can be repeated in a number?