# Examples for 6th grade (the sixth graders) - page 33

- Cube 2

How many times will increase if the surface area of the cube if we triple length of its edge? - Circle from string

Martin has a long 628 mm string . He makes circle from it. Calculate the radius of the circle. - Decide

The rectangle is divided into seven fields. On each box is to write just one of the numbers 1, 2 and 3. Mirek argue that it can be done so that the sum of the two numbers written next to each other was always different. Zuzana (Susan) instead argue that. - Roses and tulips

At the florist are 50 tulips and 5 times less roses. How many flowers are in flower shop? - Football team

Football team has in store black, purple and orange shirts, blue and white shorts and striped and gray socks. How many different outfits players may start? - Charles Bridge

Charles Bridge was 15 times older than Frantův bridge from 1900 in 1931. How old is the Charles Bridge? - Wood lumber

Wooden lumber is 4 m long and has a cross section square with side 15 cm. Calculate: a) the volume of lumber b) the weight of the lumber if 1 m^{3}weighs 790 kg - Perpetrator

The perpetrator is a number that is smaller than the number 80. It is a multiple of five and it is odd. If we added up the tens and ones of this number we get number 8. - Tank

To cuboid tank whose bottom has dimensions of 9 m and 15 m were flow 1080 hectoliters of water. This was filled 40% of the tank volume. Calculate the depth of the tank. - 15 number

What number is smaller (greater) by 15 than its half? - 2d shape

Calculate the content of a shape in which an arbitrary point is not more than 3 cm from the segment AB. The length of the segment AB is 5 cm. - The shop

The shop has 3 hectoliters of water. How many liter bottles is it? - Tank

How many minutes does it take to fill the tank to 25 cubic meters of water filled 150hl per hour? - Sales off

Calculate what was the original price of the good, if the price after discount 25% and the subsequent rise of 20% is 400 USD. - Plot

The plot on which Mr. Kalous is to build a house has the shape of a rectangle. On a 1: 500 scale, its dimensions are 7cm and 5.5cm. Find out the dimensions of the plot. Calculate the parcel size. - Cube

How many times increases the surface area of a cube with edge 23.4 cm if the length of the edge doubled? - Lcm 2

Create the smallest possible number that is divisible by numbers 5,8,9,4,3 - Troops

If the general sorts troops into the crowd by nine left 6. How many soldiers has regiment if we know that they are less than 300? - Cube edge

Determine the edges of the cube when the surface is equal to 37.5 cm square. - Car model

Car model is 52 mm long and the real car is 4524 mm long. What was the scale of model car?

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