Maths practice for 11-year-olds. - last page
Number of problems found: 4419
- Circles
For the circle c1(S1; r1=109 cm) and c2(S2; r2 = 152 cm) is distance of centers |S1S2| = 261 cm. Determine the distance between the circles. - Aquarium
An aquarium is a rectangular cuboid with a square base. It contains 62 litres of water and the base edge is 34 cm long. To what height does the water level rise? - Shape
A plane figure has a maximum area of 677 mm². Calculate its perimeter if the perimeter is to be as small as possible. - Maximum area of rhombus
At what interior angles does a rhombus have the maximum area? - Pension or fraud
Imagine working your entire career honestly, paying taxes and social insurance contributions (in Slovakia). You have a gross wage of 970 euros. You and your employer together pay 310 euros per month in social insurance contributions over 41 years, and you - Rhombus angles
If one angle of a rhombus is 137.6°, what is the size of the adjacent angle? - Rhombus HP
Calculate the area of a rhombus with height 48 cm and perimeter 64 cm. - Rhombus problem
The perimeter of a rhombus is 268 m and its area is 2278 m². Calculate the height of the rhombus. - Playground
A rectangular playground is enclosed with 38 m of netting. Its width is 7 m. Calculate its length. - Garden plot
Calculate how many metres of fencing are needed to enclose a square garden with sides of 12 metres. - Scientists from the Social Insurance
Pavol went on sick leave and the social insurance office granted a daily sick pay of 12.68358032 EUR. Calculate how many days it will take Pavol to save up to the price of 0.15 EUR, given that the last decimal place of the daily sick pay is discarded each - Triangles
An equilateral triangle with a side of 16 cm has the same perimeter as an isosceles triangle with a leg of 23 cm. Calculate the base of the isosceles triangle. - Ratio
5 numbers are in the ratio 1:2:4:5:5. Their sum is 29172. What are the numbers? - Salary raise
The monthly salary was 927 Eur. During the year, it was raised to 1075 Eur. Calculate the month from salary was increased that employee earned 12604 Eur during the whole year. - Reconstruction of the corridor
Calculate how many minutes the travel time will be reduced on a 213 km long railway corridor if the maximum speed increases from 120 km/h to 160 km/h. Calculate how many minutes the travel time will be shortened if the train must stop at 6 stations, decel - Ultra expensive ramps
The village Čakajovce have two-level railway crossings (the ramps), the railway company ZSR decided to replace it. The price for upgrading the two crossings is 302065 Euros. Calculate how we can obtain many houses for 77000 euros at this price. Calculate - Trolleybus
Trolleybus line No. 215 is 30 km long. If the trolleybus travels 4 km/h faster, the round trip would be 39 minutes shorter. Calculate the trolleybus's speed and the time for a round trip. - Homeless Dezider
Homeless Dežko has 7 coins in his jacket: . Calculate the value of its assets and calculate how many bottles of beer for 0.55 EUR it can buy. - Volatile percents
Peter is working as a forex trader. He suffered a loss of 60.1 percent. Calculate what percentage you must now earn to lift from loss.
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