Maths practice for 12-year-olds - page 263 of 307
Number of problems found: 6132
- Recommended dimensions
Michael bought an aquarium in the shape of a block with dimensions of the bottom 30 cm x 15 cm and a height of 20 cm. The salesman recommended that he fill the aquarium with water only up to a height of 15 cm. How many liters of water does Michael have to - Measuring 2747
We poured 1 liter of water into an aquarium measuring 20 cm x 20 cm and 25 cm high. How high does the water in the aquarium reach? - Distributes 2746
Monika distributes candy. Half of a fifth of them are 14 candies. How many sweets did Monika have? - Snails
How many liters of water will fit in an aquarium with bottom dimensions of 30 cm and 25 cm and a height of 60 cm if we pour water up to a height of 58 cm? How many snails can we keep in an aquarium if we know that snails need 600 cm³ of water for their li
- Expensive 2740
The product became more expensive by 25%. By what percent of the new price does he have to reduce for his price to be equal to the original price? - Original 2739
Dresses on sale have become cheaper twice: first by 12%, then by 25% of the new price. What% of the original price was the final price? - 15-meter-long 2735
The swimming pool also has a 15-meter-long pool 8 meters wide with a constant depth of 2 meters. If it is always filled 10 cm below the edge, how many hectoliters of water can fit in it? - Participant 2734
Each participant on the school trip has to pay € 7 for the booked bus. Three students fell ill and did not go on a trip. Everyone then had to pay € 8 for the bus. How many students took part in the trip? - Diameter 2733
If we cut a tree trunk with a diameter of 42 cm and the width of the cutting joint is 3 mm, how many cubic cm of wood will turn into sawdust?
- Smallest 2732
The sum of the three numbers is 77. The largest of them is three times the smallest, and the middle is half of the largest. Write all the summands. - Two-fifths 2731
Barbora has already read 144 pages of the book. She has yet to read two-fifths of the pages of the entire book. How many pages does the whole book have? - Consumption 2729
The car's average consumption is x = @ x liters of gasoline per 100 kilometers. How much petrol does a car use on a 320-kilometer road? - Measurements 2728
Three friends weighed themselves so that two always stood on the scale, and the third wrote down the measured weight. After all the measurements, the numbers written on the paper were 60 kg, 64 kg, and 66 kg. Determine the mass of each boy. - Rectangular garden
How many m² (square meters) is a rectangular garden if a = 21 steps and a wide b = 41 steps are long, with the length of one step being, on average, 3/4 (three quarters) meters?
- Brothers 2726
The three brothers are 42 years old together. John is five years younger than Peter. Peter is two years younger than Michael. How old are they? - Ascent 2725
If the road has an ascent of 8%, does that mean it will climb by 200 m? - Cents no more
Janko bought pencils for 35 cents each. Neither he nor the salesperson had small coins, just a whole € 1 coin. At least how many pencils did he have to buy to pay for the whole euros? - There 2723
There are three times as many geese as hares on the farm. They have a total of 60 feet. How many geese are on the farm? - Dimensions 2720
The cabinet has the shape of a cuboid, the dimensions of which are 80 cm and 55 cm, and a height of 1.8 m. The cabinet is painted twice on the outside. How much paint is used to paint the cabinet if 1kg is enough for 4 m²? (we do not paint the bottom of t
Calculate the volume and surface of the prism with the base of an equilateral triangle with side a = 4cm, and the body height is 6cm.Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
