Math practice for 13 year olds - page 398 of 419
Number of problems found: 8380
- Word problem
348 students were on holiday in Hungary. 133 bought pizza, chips 28 pupils, 25 pupils bought soda, butter 26 pupils, 15 pupils fruits, vegetables 29 students. How much pay for all the food, if every meal costs 5.3 euros? - Diplomas
Zuzaně helped write out diplomas. Issuance first took 3.3 minutes, each next 2.3 minutes. How much time will it take to write out n=7 diplomas (including the first) at this pace? - Rectangle
Calculate the length of the side HM and diagonal EM of rectangle EHMQ when given: |QM| = 29 cm and angle ∠ EHQ = 36 degrees. - Column
The vertical pole high 7 m tall broke, and its toe fell 4.7 m from the bottom of the pole. At what height above the ground does the pole break? - Water tank
The water tank-shaped cuboid has a width of 2.3 m and a length twice as large. If water flows into 19 liters of water per second during 52 minutes, how high will it reach? - Car range
Calculate the maximum range of cars, if you can spend 5 euros, the diesel price is 1.6 Eur/l, and car consumption is 5.4 l/100 km. - Washing machine
The price of the washing machine decreased by 10% and then by 53 € due to small sales. After two price decreases, cost € 310. How much did it initially cost? - Similarity coefficient
The similarity ratio of two equilateral triangles is 4.3 (i.e., 43:10). The length of the side of the smaller triangle is 7.5 cm. Calculate the perimeter and area of the larger triangle. - Prism
Calculate the volume of the rhombic prism. The prism base is a rhombus whose one diagonal is 47 cm, and the edge of the base is 27 cm. The edge length and height of the base of the prism are 4:3. - Skier
At this point, the first skier leads 10 km before the second skier and travels at a constant speed of 14 km/h. The second skier rides at 19 km/h. How long does it take him to catch up with the first? - Train and car
The train and the car started at a constant speed. When the train travels 87 km, the car travels 97 km. How many km does the train travel when the car travels 87 km? - President
The country has 5.3 million citizens which 2.77 million are voters. Turnout was 59.8%. President R. F. was elected from 18 candidates for president and won with 34% of votes. Calculate what percentage of the country's citizens voted R.F. as president. - Medals
How many ways can gold, silver, and bronze medals be divided among 16 contestants? - Rhombus
Calculate the length of the diagonal AC of the rhombus ABCD if its perimeter is 524 dm and the other diagonal BD has length 159 dm. - Driving school
Driving final exam involving 14 attendants. The exam consists of three parts. 4 fails the test (quiz), and 7 students fail on car skills test on the playground (slalom between the cone). The practical part of the test - driving in town in real traffic - a - Areaf of ST
It is given square ATRD with side |TR|=16. Calculate the area of the triangle ADU if vertex U lies online RT. - Waiting room
In the waiting room are people and flies. Together, they have 21 heads and 102 legs (fly has six legs). How many people and flies are in the waiting room? - Certificate
There are 21 students in a class. The mathematics score wasn't worse than 2. The average score in mathematics was 1.0952. How many students have a score of one, and how many have a score of 2? - Unions
Calculate how much money per year would go to the treasury of unions if 396 thousand employees join unions with an average net salary of 993 euros and if union membership costs 1% of the net monthly salary. - Icerink
A rectangular rink with 68.7 m and 561 dm dimensions must be covered with a layer of ice 4.2 cm thick. How many liters of water is necessary for ice formation when the ice volume is 9.7% greater than the volume of water?
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