Maths practice for 12-year-olds - page 334 of 347
Number of problems found: 6932
- Homework
Together, the mother and Kate weigh 21.9 kg more than the father. The father weighs 8.1 kg more than the mother. The father weighs 40.2 kg more than Kate. Determine the weights of the father, mother, and Kate. - Tiles
How many 18 cm square tiles will cover a floor 8.46 m by 5.76 m? - Count of roots
How many solutions have equation x * y = 4961 with two unknowns on the set of natural numbers? - Efficiency
A certain device consumes 50 kW and delivers 17 kW. Find its efficiency. - Base
Compute the base of an isosceles triangle, with the arm a=10 cm and a height above the base h=7 cm. - Homework - jumps
Sasha jumped 141 cm Peter 4 cm more than George. Jirka 6 cm less than Misha. Misha 7 cm less than Philip, and Philip is half as much as Sasha and Peter together. How far does each jump? - Road embankment
Road embankment has a cross-section shape of an isosceles trapezoid with bases 7 m and 10 m and 5 m long leg. How many cubic meters of soil is in an embankment length of 1198 meters? - IS trapezoid
Isosceles trapezoid arm measured 80 cm. Height is 65 cm, and the middle segment is 71 cm. Find the length of its bases. - Bridge
The bridge arc has a span of 159 m and a height of 14 m. Calculate the radius of the circle arc of this bridge. - The circle arc
Calculate the span of the arc, which is part of a circle with diameter d = 11 m and its height is 5 m. - Coke
From one tonne of coal, 787 kg of coke for iron production is obtained. How many wagons, each carrying 28 tonnes of coal per day, are needed to supply a blast furnace with a daily consumption of 986 tonnes of coke? - Bakery
How heavy must prepare bread at a bakery if a bread loses 18% of water during baking and after baking must have 1.7 kg? (Calculate to the nearest gram) - Railways
Railways climb 2.8 ‰. Calculate the height difference between two points on the railway distant 5997 meters. - Tereza
The cube has a base area of 144 mm². Calculate the edge length, volume, and area of its surface. - Pool
Mr. Peter builds a pool in the garden in the shape of a four-sided prism with a rhombus base. The base edge length is 8 m, and the distance between the opposite walls of the pool is 7 m. The estimated depth is 144 cm. How many hectoliters of water does Mr - Area of RT 2
Calculate the area of a right triangle whose legs have a length of 9 cm and 6.4 cm. - Pure quadratic equation
Solve pure quadratic equation -7x² +4 = 0. - LCM
What is the least common multiple of 33, 24, 34? - Task
I have homework. The cube's edge is 14 cm long, and I must find the diagonal between the wall and the body. - Paddlers
Students of canoeists traveled on a trip of three days 84 km. On the second day, they traveled 7% more than the first day and on the third day 5 km over the second day. How many kilometers are traveled each day?
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