Maths practice for 12-year-olds - page 43 of 355
Number of problems found: 7091
- The special
The special mix contains 5/6 pounds of dried chicken, 2/3 pounds of dried bison, and 1/2 pounds of dried vegetables. How many pounds of the special mix does Max get? Explain how you found your answer. - Diameter 132
The base diameter of a rotating cylinder is 2 m and its surface area is 34.54 m². Calculate the base radius of the given rotating cylinder, its height and volume. - Garden 3
A garden pool in the shape of a cylinder with a base diameter of 300 cm contains 25 hectolitres of water. How deep is it if the water reaches 10 cm below the rim of the pool? - Volume 102
The volume of a cylinder is 214 cm³. The base radius is 4 cm. Calculate the height of the cylinder. - Drinking trough
A drinking trough for cattle is in the shape of a cylinder measuring 2 metres in length and 80 cm in width. How much sheet metal is needed to make it, given that an additional 12% of material is added for joints? - Garden fencing
How much will decorative fencing cost if the garden measures 350 x 260 metres and 1 metre of fencing costs 450 CZK? - Advantageous internet
We had long been using internet from company A at 17.49 EUR per month — after the contract period. But we switched to internet from company B at 11.39 EUR per month, with the condition that a fee of 48.38 EUR is paid in the first month, which includes the - Pirates
Pirates captured 1 tonne of gold and hid it in 25 barrels. How many more barrels would the pirates need if they transported 25 kg of gold in each barrel? - At Junior's
A pizzeria offers pizza with tomatoes and cheese. If a customer wishes, they may add toppings from the following options: ham, mushrooms, corn and onion, each ingredient at most once. Every pizza is made in three sizes: small, medium and large. How many d - Electrical 11
An electrical device produces 4.2 MJ of work per hour at an efficiency of 0.53 (53%). What is the power input of this device? - Calculate 258
Calculate the volume and surface area of a prism with a trapezoidal base and a height of 9 cm. The base is an isosceles trapezoid with bases of lengths 3 cm and 6 cm and arms of length 2.5 cm. The height of the base is 2cm. - At night
On the night from Thursday to Friday, the temperature on the thermometer dropped to −7°C. On Friday at noon, the temperature rose by 13°C, and in the evening, the temperature dropped by 11°C. On Friday evening, the thermometer showed the temperature: - In the middle 2
In the middle between the unknown number and the number 30 is the number 12. Determine the unknown number. - From the intersection
From the intersection to the school is 6/5 km, to the shop 9/10 km, to the bank 5/8 km, and to the park 21/8 km. Which place is closest to the intersection? - Asphalt - rolling A roller for rolling asphalt has a diameter of 80 cm and a width of 1.2 m. How many square meters of road does it roll if it turns twenty times?
- Meat 5
2.4 kg of meat costs 292 CZK in the store. How much meat of the same type can I buy here for 2482 CZK? - Path 11
A path 1.5 meters wide is to be built around the perimeter of a square plot of land with a side of 28 meters. By how much will the area of the plot be reduced? - Solve R
Solve the equation with brackets: 5×(2u-9)-8×(0.5-3u)=4×(7u-1)-3 - Quarter of some number
A quarter of an unknown number increased by one hundred is fifty. What is the unknown number? - Triangle ABP
An isosceles trapezoid ABCD is given. The length of side AB is 10 cm, the length of CD is 7 cm, and the height to side AB is 4 cm. Point P is the base of the altitude to side AD. Calculate the area of the triangle ABP.
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