Maths practice for 12-year-olds - page 251 of 355

Number of problems found: 7081

Two Workers Work Days
Two workers would do the work together in 2 days. The first would do some work here in 6 days. In how many days would the second worker do this work?
Temperature Difference Celsius
Calculate the temperature difference if one temperature is 26 degrees and the other is -22 degrees Celsius.
Soccer Ball Price
How much does a soccer ball cost, and 6/7 of the price is 12 €?
The iron roller
The iron roller has a base circumference of 28 π cm. The worker drilled a hole through the top of the roller. After drilling, the given product had a 35% smaller volume than before. The hole's circumference in the base is equal to the height of the roller
Triangle shoulder length
The circumference of the isosceles triangle is 7.8 cm, and the base length is 34 cm. How long are his shoulders?
Rhombus Parquet Floor Area
The parquet floors in the room have the shape of a rhombus with a side of 2.3 dm long and a corresponding height of 0.9 dm long. How many square meters does the room have if its floor comprises 580 parquets?
Sides of triangle
The Triangle circumference with two identical sides is 117cm. The third side measures 44cm. How many cms do you measure on one of the same sides?
Garden Steps Adult Walk
The garden has a rectangular shape with dimensions of 25m and 52m. How many steps would an adult with an average step length of 75 cm go through the garden?
Steps School Distance Year
Eva takes 539 steps on her way to school. How many meters is it if he takes steps that are 4/7 meters long on average? How many kilometers does Eva "walk" during one school year on her way to and from school?
Hunt catch
Hunters shot the same number of pheasants as hares on the hunt. Together, they had catches of 408 feet. How many hares were there? (Suppose no animal was handicapped.)
Seamstress
The seamstress cut the fabric into three parts. The first part was the eighth fabric, the second part was three-fifths of the fabric, and the third part had a length of 66 cm. Calculate the original length of the fabric.
Exhibitor count
Last year, five fewer exhibitors participated in the Autosalon exhibition. This year there were a fifth more than last year, i.e., 150 exhibitors. How many exhibitors participated in the motor show the year before?
Grandfathers Age and Grandchildren
Michal's grandfather has 4 grandchildren. During this year's celebrations, he discovered that he is 7 times older than Michal, six times as old as Vašek, four times as old as Emil, and three times as old as Honza. This situation can only happen once in a
Two-Digit Numbers Multiply Four
Write how many double-digit numbers there are, which, if we multiply by four, we get the result ending in two zeros.
Cube edge
The edge of the cube has a length a = 1. Find the length of the edge of a cube that has a double surface.
The wall
The wall in the bathroom has dimensions of 2.8 m and 2.6 m. Suppose we would like to cover this wall to a height of 1.6 m. How many square meters of tiles do we need to buy?
Diamonds puzzle
The puzzle is composed of paper diamonds. One diamond has a tent 3.4 cm long and a corresponding height of 2.5 cm. How much paper in dm squared is needed for 60 diamonds?
Rhombus Parquet Room Area
The parquet floors in the room have the shape of a rhombus with a side of 2.5 dm long and a corresponding height of 0.8 dm long. How many square meters does a room have if its floor is made of 600 parquets?
Cube edge
The cube has a surface area of 110.6 cm². Calculate the length of its edge.
Kamil's Luggage
Kamil flew to South Africa. On the plane, luggage is limited to 20 kg. Kamil's suitcase weighs 5.6 kg, and the 20 T-shirts he packed each weighed 20 dag. He also packed 5 pairs of trousers at 800 g each and toiletries weighing 2,600,000 mg. Just before le

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