Maths practice for 12-year-olds - page 100 of 350
Number of problems found: 6995
- Cylindrical 66744
How many liters will fit in a cylindrical container with a base area of 0.06 m² and a height of 5 cm? - Measuring 66734
How many 8-liter cans can we fill from a block tank measuring 1.2 * 1m * 1.6m? - Percentage - prism and cube
Prism with square base a=25cm, height h=45cm. cube: b=15cm a) what percentage of the volume of the prism is the volume of the cube? b) what height should the prism have to have the same volume as the cube? - Subscription 66664
One issue of the moderator's magazine costs 1.61 euros. The annual subscription for 12 issues is 18 euros. How much will you save on one issue when subscribing to a magazine? - Conditions 66544
I have a box that contains white, milk, and dark chocolate candies. The ratio of white to milk candies is 3:4. The ratio of white to dark candies is 4:3. The least amount of candies in the box if the conditions of the ratio of candies are met. - 15-kilogram 66524
The lift has a load capacity of 250 kg. How many 15-kilogram boxes can a person weighing 80 kg maximally take? - Box of cereal
Ari and Bill share a 20-ounce box of cereal. By the end of the week, Ari had eaten 3/8 of the box, and Bill had eaten 1/4 of the box of cereal. How many ounces are left in the box? - Operations 66444
Consider an experiment with a dice. Let us define the random events A={at most 3}, B={roll more than 1}, C={roll 2, 3, 4}. Determine the random event D that is given by the operations A∪B \ B∪C - Measured 66384
The wire measured 109.3 cm and was 0.327 m shorter than the pupils needed in the class. How long did the pupils need? - Difference 66354
A circle is inscribed in a square with a side of 12 cm so that it touches all its sides. Calculate the difference between the area of the square and the circle. - Deciliters 66324
We placed the largest possible lead cylinder in a 1-liter cube container. How many deciliters of water will now fit in the container? - Quadrilateral prism
Calculate the surface and volume of a quadrilateral prism if given: the area of the base is 40 cm square, the bottom of the base is k = 8 cm, and the height of the prism is 1.3 dm (the bottom is a rectangle) - Calculate 66254
Calculate the volume and surface of a regular hexagonal prism with a height v = 2cm and a base edge a = 8cm. - Sandwiches
In a cafeteria, 1/6 of the students eat salads, and 2/3 eat sandwiches. There are 18 students in the cafeteria. How many students are eating lunches other than salads or sandwiches? - Mathew
Mathew has eight pencils. Three of them do not have erasers on end. What fraction of the pencils do not have erasers on end? - Contains 66184
Which natural number contains 12 thousand, 15 hundred, 21 tens, and 11 units? - Cylindrical 66114
The cylindrical vase has a volume of 1 l. If its base has an area of 0.5 dm2, calculate its height. - For last
Last week, the temperature varied a total of 17 degrees over the day. If the high for the day was 10 degrees, what was the low for the day (write a number sentence and solve it. ) - Resistance 66074
Determine the current flowing through the car's starter, whose resistance is 60 milliohms at 12V. - Resistance 66054
The handset has a resistance of 4000 ohms. Calculate what voltage is connected to them if the current passes 2.5mA.
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