Grade - math word problems - page 829 of 968
Number of problems found: 19341
- Elephant population
In 1979, 1.3 million elephants lived in Africa. By 1989, their number had dropped to 600,000. On average, how many elephants have died each year during this period? - Water level
To cuboid-shaped poll, bottom size 2 m and 3.5 m, flows water at a rate of 50 liters per minute. How long will it take for water to reach a level of 50 cm? - Father and sons age
The father is 56 years old, and his sons are 25 and 19 years old. In how many years will the father's age equal the sum of his sons' ages? - Described circle to rectangle
The rectangle with 6 cm and 4 cm sides was a circumscribed circle. What part of the circle area determined by the circumscribed circle occupies a rectangle? Express in perctentages(%). - Circle removal
The student should remove the inner circle with a radius of 3 cm from the circle with a radius of 7 cm. How much of the area of the large circle will be removed? Express result in percent. - Atmospheric pressure
The measured value of atmospheric pressure is 96,000 Pa. We want to verify this value with a closed tube at one end. Before measuring, fill the tube with glycerol (density of glycerol ρ = 1200 kg/m3). How long does the tube have to be? - Feeding and selling
Of the 825 tons, the first part goes for feeding, the second for sale. How many tonnes are intended for feeding if this part makes up 65% of the second part? - Station lights
There are 20 lights at the bus station. However, it is only two times less lit. How many lights are on at the station? - Zucchini
One zucchini costs 5 CZK. How much would it cost four? - Kerosene volume
What is the volume of kerosene if its weight is 8g? The density of kerosene is 780 g / l - Three equations
Solve the following set of equations with three unknowns. 3x + 2y + 3z = 110 5x-y-4z = 0 2x-3y + z = 0 - Wooden pegs
From two wooden poles 240 cm long and 210 cm long, it is necessary to cut pegs of the same length as long as possible so that no residue remains. How many such pins can be cut? - Train distance
The passenger train is 60 km from the destination station and runs at a steady speed of 54 km/h. How far will it be from the destination station in 45 minutes? - Stamp exchange
Wes has 62 marks, Libor has 71 marks. The two boys exchanged grades together. Wes wanted 2 very rare stamps from Libor. Libor exchanged them for him, but Wes had to give him 2 others for each of these two stamps. How many marks did each of them have? - Bracket placement
Add to expression 1 + 2x3 - 4x5:6 a / one pair of brackets so that the result is as large as possible b / one pair of brackets so that the result is as small as possible - Acting
Two locomotives are used in a train set. One locomotive pulls the train and the other pushes it. The pulling locomotive exerts a force of 500 kN on the train, and the pushing locomotive exerts a force of 400 kN. a) Draw a diagram of the described situatio - Square area
The perimeter of the square is 380 dm. What will be its area? - Marble game
Zdeněk, Martin, and Ondřej played marbles. Each of the boys had 33 marbles at the start of the game. How many marbles did each have at the end of the game if Martin won 16 and Zdeněk lost 12? How did Ondra do? - Rectangle
The length of the rectangle is in the ratio of 5:12, and the circumference is 238 cm. Calculate the length of the diagonal and the area of the rectangle. - Cube edge
The block volume is 512 dm³. How long is the edge of a cube with the same volume as a block?
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