Maths practice for 12-year-olds - page 324 of 351
Number of problems found: 7011
- Milk package
Milk is sold in a box with dimensions of 9.5 cm, 16.5 cm, and 6.5 cm. Determine the maximum amount of milk that can fit into a box. Coating thickness is negligible. - Round table tablecloth
The round table has an area of 50.24 dm². Calculate the circular tablecloth diameter if it extends beyond the table's edge by 30 cm. - Tiler
On what surface must the m² tiler lay 30 square tiles, each of which has a side 25 cm? - Square garden
The plan with a scale of 1:1500 is drawn as a square garden with an area 81 cm². How many meters is the garden fence long? Determine the actual acreage gardens. - Area of ditch
How great will an area have a section of the trapezoidal ditch with a width of 1.6 meters above and below 0.57 meters? The depth of the ditch is 2.08 meters. - Tiles
The room has dimensions of 12 m and 5.6 m. Determine the number of square tiles and their largest possible size to cover the room's floor. - Passenger car
A passenger car covers 1 km in 2/3 minutes, and a truck in 50 seconds longer. How much slower is the speed of the truck? - Expressions
Expression (3a-7).(3a+7) is identical with: ... - Clocks
How long does the track travel the second hand of a clock in 30 hours, which is 4 cm long? - Fire tank
How deep is the fire tank with the dimensions of the bottom 7m and 12m, when filled with 420 m³ of water? - A family
A family of four pays for garbage collection per the year 1800 CZK. How many CZK (Czech crowns) a year does the waste company get from the house where live 93 people live? - Three digits number 2
Find the number of all three-digit positive integers that can be put together from digits 1,2,3,4 and which are subject to the same time has the following conditions: on one position is one of the numbers 1,3,4, on the place of hundreds 4 or 2. - Two workers
Two workers together execute some work in 10 days. The first worker would have done it himself in 20 days. How many days would they have done himself a second worker? - Car rent
Rental cars are paid a fixed daily fee plus 16 cents per kilometer traveled. Samuel wants to rent a car for a day and work out, which will cost 175 euros. When paying, he got a 20% discount on the daily fee, and the cost per kilometer was unchanged. Samue - Calcium and citality
The daily dose of calcium was obtained using 0.75 liters of milk and 60 grams of cheese. a/ In the morning, I drank half a liter of milk. How much cheese must I eat to consume a daily dose of calcium? b/ I ate 50 grams of cheese. How much milk must I drin - Four-digit number
Find a four-digit number, which quadrupled written backward is the same number. - angles in quadrilateral
What size have angles in quadrilateral (4-gon) if they are in a ratio of 8:9:10:13? - Salt
One ton of seawater contains 25 kg of salt. How many tons of seawater must be evaporated to obtain 2 q of salt? - Sisters
Sisters Janka and Danka have 220 CZK saved together. She wants to take a fifth of her savings and Danka's quarter on a trip to Janka. Then, they will have 50 CZK on the trip. How much money did Janka and Danka have? - Class
The class has 18 students. Everyone knows inline skating or skateboarding. Inline skating can ride 11 students on a skateboard 10. How many ride-on inline skates and a skateboard?
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