# Examples for 6th grade (the sixth graders) - page 8

- Cube

The sum of lengths of cube edges is 69 cm. What is its surface and volume? - Minute angle

Determine size of angle, which takes minute hand for 75 minutes. - Fractions

Sort fractions ? by its size. Result write as three serial numbers 1,2,3. - Lines

Five bus lines runs at intervals 3, 6, 9, 12, 15 minutes. In the morning, suddenly start at 4:00. After how many minutes the bus lines meet again? - Working time - shortening

The media often speculates about the change (especially to shorten) the working time of the five-day eight-hour working week to another working model. Calculate how many hours a day the employee would have to work a day at 3-day work week if he must work t - Denominator

Calculate the missing denominator x: ? - Pedestrian and cyclist

Pedestrian out with a speed of 4 km/hour from city center and after 1hour and 10 minutes came after him cyclist at speed of 18 km/h. At how many minutes he catches up with pedestrian? - Pizza master

Master says that he can splits pizza to 16 parts by five equals straight cuts. Is it possible? - Hiker

Hiker went half of trip the first day, the third of trip the second day and remaines 15 km. How long trip he planned? - Garden

How many steps of 76 cm circumvent square garden with area 1.8 ha? - Tiles

Hall has dimensions 325 &time; 170 dm. What is the largest size of square tiles that can be entire hall tiled and how many we need them? - Exhibition

The teacher paid for 280 Kč for 4.A students for admission to the exhibition. How many students were on the exhibition? - Bus driver

The bus driver rides 174 km in the morning, afternoon rides 26 km more. How many kilometers traveled in 5 days if he rides on the same line? - Do you solve this?

Determine area S of rectangle and length of its sides if its perimeter is 102 cm. - Rectangle A2dim

Calculate the side of the rectangle, if you know that its area is of 2590 m^{2}and one side is 74 m. - Thrift woman

Calculate how long grandmother will save to new shoes priced 108 euros if save 3 Eur monthly. - Car

Car travels 1/3 of the trip on the first day, second day 2/5 of the trip and left even 340 km for next days. How long is the trip? - Opposite numbers

Calculate opposite numbers (additive inverse) to given ones: - Paddlers

Students of canoeists trip traveled in three days 102 km. Second day traveled 15% more than first day and at the third day 9 km over the second day. How many kilometers traveled each day? - Weight of air

What is the weight of air in the living room measuring width 5 m length 2 m and height 2.8 m? Air density is ρ = 1.2 kg/m^{3}.

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