Đề thi Violympic môn Tiếng anh lớp 5 vòng 7 - Năm học 2015-2016

Math Violympic 5 Round 7 2015-2016

pg. 1 manhquyet76@gmail.com

Exam 1: Sắp xếp

2.4:2= 4.5:3= 3.6:2= 0.4x5=

8.4:4= 6.45:3= 0.9x2.5= 4.9x0.5=

0.5x5= 10.12:4= 7:5+1.6= 25:8=

0.7+15:6= 11:4+0.5= 255:25:3= 6.92x4:8=

41:4-6.73= 1.78:2x4= 12:5+1.25= 3:4x5=

9.03:2.15= 13.43:3.16= 5.22:1.2= 10.95:2.5=

22.65:5= x, if 5% of x is 0.23=

x, if 40% of x is 1.86=

20% of 23.5=

25% of 19.2= 15% of 33=

Exam 2: Cóc vàng tài ba

191 is a number that stays the same when read backwards as when read forwards. How many 4 - digit numbers have this property?

A rectangle has a perimeter of 3.6dm and one side is twice as long as another. What is the rectangle’s area in m2?

A rectangle is divided exactly 12 identical squares arranged in four rows. What is the area of the rectangle, if the perimeter of one small square is 15cm?

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Math Violympic 5 Round 7 2015-2016

pg. 2 manhquyet76@gmail.com

Calculate:

0.18 x 400 = …

6.3 x 6.4 + 3.6 x 6.3 = …

376. 82 + 295.69 = …

Charlie buys two pairs of shoes for $15.75 each. He gives the clerk $50.00. How much change should Charlie receive?

Find the standard decimal form of 5 x 0.01 + 3 x 0.2.

Find the value of x such that 9.6 x x =6.4 x 7.2

Find the value of x such that x x 3.6 =18.72.

Find two numbers if their sum is 8.15 and their difference is 3.09.

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Math Violympic 5 Round 7 2015-2016

pg. 3 manhquyet76@gmail.com

Four friends eating four pizzas that have same size. John has left, James has left, Jacob has

left and Billy has left. who eats the most amount of pizzas?

If then y = …

If x is a natural number and x < 17.988. ………

If x x 3.7 = 17.76 then 7.4 x x = …

If you can ride 7.35km in a 15 minutes then how far can you ride in 2 hours?

In one month, there are five Fridays. This month could not have …

2 5

1 3

1 4 3 5

15.498 15.4xy 

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Math Violympic 5 Round 7 2015-2016

pg. 4 manhquyet76@gmail.com

James buys 5 Harry Potter books at $200.25 each. What is the total cost?

James is 8 years old. His mother Mary is 4 times as old as him. How old will James be when Mary is twice as old as him?

Mary calculates the sum of the digits that she sees on her clock (example: If the clock shows 16:35 then she gets 15). What is the biggest sum she can get if the clock is a 24 - hour clock?.

The perimeter of a rectangular land is 96.26m. Its length is 26.05m. Its area is …m2.

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Math Violympic 5 Round 7 2015-2016

pg. 5 manhquyet76@gmail.com

The value of 2.56 x 4.15 + 7.623 is…

The value of the digit 5 in 238.159 is…

The value of the digit 2 in 732.68 is…

Write as a decimal number. ……………..

Exam 3: Đỉnh núi trí tuệ

…% of 120 is 138. ………………..

…% of 256 is 64. ………………….

60% of Jane’s school are girls and there are 180 more girls than boy. How many students are there in Jane’s school?

Anna add 4g of sugar to 16g of water. What is percentage of sugar in the solution obtained?

1 8 4

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Math Violympic 5 Round 7 2015-2016

pg. 6 manhquyet76@gmail.com

Anna buys a dress at a discount of 25%. She spents of her money to buy the dress and has $450

left. How much does the dress cost before the discount?

At a supermarket, a certain item has increased from 75 cents per pound to 87 cents per pound. What is the percentage increase in the cost of the item?

Calculate the percentage: 35% of 0 is … (Write your answer by natural number or decimal in the simlest form). ………………….

Calculate the percentage: 70% of 48 is … (Write your answer by natural number or decimal in the simlest form). ………………….

………………….

………………….

Find the following percentage: 30% of 22 is … (Write your answer by natural number or decimal in the simlest form). ………………….

Find the following percentage: 75% of 75 is … (Write your answer by natural number or decimal in the simlest form). ………………….

Find the following percentage: 80% of 450 is … (Write your answer by natural number or decimal in the simlest form)………..

3 11

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