Question 1: Choose the calculation that has the greatest result.

a. 125,7 : 3 + 14,3

b. 365,5 : 5 - 17,8

c. 59,8 : 2 + 26,13

d. 196,4 : 4 - 7,07

Question 2: Peter counts his heart rate. He counts 8 beats per 6 seconds on average. How many beats per minute does Peter count?

a. 75                     b. 140                    c. 60                 d. 80

Question 3: Which fraction is equal to 17,5%?

a. 35/20                   b. 7/40                    c. 35/50              d. 175/100

Question 4: Mia wants to buy apple. Which is the best buy?

a. 7kg of apples for $30,38

b. 5kg of apples for $21,5

c. 6kg of apples for $26,1

d. 4kg of apples for $17,32

Question 5: The product: 20 x 21 x 22 x ..... x 40 has ....... digit 0.

a. 4                  b. 6              c. 5                    d. 3

Question 6: Which shape is colored more than 50% in green?

Question 7: If number A is increased by 60% then it will equal number B. How much percentage will B be decreased by to equal A?

a. 40%             b. 62,5%               c. 37,5%             d. 60%

Question 8: Find the smallest number that is 7 times the sum of its digits?

a. 28              b. 21                   c. 14                d. 35

Question 9: Calculate:Choose the correct answer:

a. 767/768         b. 711/768                c. 255/256             d. 85/256

Question 10: How many fractions equal 1/5 and have denominators of 2 - digit numbers?

a. 16             b. 18                   c. 22                 d. 20

Exam number 2: Your car has to pass 5 obstacles to finish. In order to overcom each obstacle, you have to answer correctly one of three problems in that obstacle. (Vượt chướng ngại vật)

Question 1: If and n is a natural number then n = ...........

Question 2: 

The perimeter of the shape is ....... cm.

Question 3: Find X if X x 8,6 - 5,2 x X - 11,06 = 5,94

Question 4: Calculate: 5,5 x (3,5 - 1,5) + 1,5 = ..............

Question 5: Calculate: 

Exam number 3: Find the blank with the suitable number

(Note: write decimal number with the comma" between number part and fraction part. Ex: 0,5)

Question 1: 5,136m³ = ............ cm³.

Question 2: 47/250 dm³ = ............. cm³.

Question 3: The perimeter of a circle is 15,7dm. Its area is ....... cm².

Question 4: Jane bought a couch. A couch costs 950 dollars. She received a 30% discount. How much of a discount did she get?

Question 5: The ratio of the number of girls to the number of boys in a classroom is 5 : 4. When 10 girls left the classroom, the ratio of the number of boys to the number of girls became 4 : 3. How many students were in the classroom at first?

Question 6: The area of a rectangle is 50m2. If it's length is increased by 10% and it's width is decreased by 20% then the area of new rectangle is ...............m².

Question 7: An aquarium is 8dm deep, 12dm long and 0,3m wide. What is the volume of the aquarium in cubic centimeter?

Question 8:

The sum of all square's area in the following figure is 375cm2. The area of the biggest square is ............ dm2.

Question 9: At a party 60% of the boys are dancing with 80% of the girls. How many people are dancing if there are 35 people? (A pair cludes only one boy and one girl)

Question 10:

Look at the following figure. AF/AB = 1/4; AE/AC = 1/3. If the area of triangle GBD is 270m² then the area of the triangle GCD is .......... m².

[Test article] 21.1.2021

[Test article] 21.1.2021

Answer as many questions as you can!
 

[test article]

A speed of 60 miles per hour is equal to 88 feet per second. If the speed limit in a school zone is 15 miles per hour, what is the speed limit in this zone in feet per second?

In the figure, two regular pentagons have been attached to a regular hexagon to create a 12-gon. If each regular polygon has side length 3 feet, what is the perimeter of the resulting 12-gon?

If the value of x is 10, what is the value of 3x + 4x + 5x ? Solve in many ways.

Of 1000 people surveyed, one-third of the 630 people who reported owning a cat also own a dog. If each person surveyed owns a cat, a dog or both, how many own a dog?