Maths practice for 12-year-olds - page 58 of 362
Number of problems found: 7228
- Allowances 82413
The teacher decided to sew covers for the eight-seat blocks in the school library. All cubes are cube-shaped with an edge 40 cm long. How many m² of fabric will the teacher need in total if the blocks are not lined from the bottom, and 5% must be added fo - Members 82412
There are 12 girls in the circle. Girls make up 2/3 of all members. How many boys are there in the circle? - Kilometers 82408
The longest Brazilian river, the Amazon, is ten times longer than the two Czech rivers, Vltava and Berounka. The ratio of the lengths of the Vltava and Berounka is 9:5. At the same time, the length ratio of the Vltava and Morava rivers is 5:4. How many ki - Reassigned 82404
Five grinders grind 120 products in 12 hours. After 4 hours of work, another 11 grinders were reassigned to the workshop. Will he complete the entire job in 6 hours? - Seamstresses 82403
Eight seamstresses sew an order in 85 hours. After 21 hours, 3 seamstresses had to leave for other work. In how many more hours will the order be fulfilled? How many hours did the whole job take? - Students 82381
Sixth graders received 264 pencils and 330 pens. How many students can be in this class so that each student gets the same number of pencils and pens? How many pens and pencils does each student get? - Trapezoidal 82377
The trapezoidal garden has parallel sides of 14m and 20m, and its area is 136 square meters. How wide is the garden?
- Thousands 82347
Round the number 2548 to tens of thousands. - Choices 82334
There are 15 black and 15 white balls in an opaque bag. Elenka took one ball out of the bag three times. what choices of the three balls could she choose? - Performance_ 82318
The dance troupe has 24 members. How many equal-sized groups of dancers can he divide into during a performance_ - Arithmetic 82287
If the arithmetic mean of the numbers a1, a2, a3, a4, and a5 is the number A, the arithmetic mean of the numbers a1, a2, a3, and a4 is the number B, then what is a5 equal to? - Calculate 82286
If I reduce a segment of length 72 cm in a ratio of 5:8, it will have a length of x cm. Calculate x. - Cooperatives - table
There are 3 cooperatives and privately owned farmers in the district. The table shows the wheat yields per hectare in t/ha and their areas in hectares in 4 entities. What was the average wheat yield in the district? subject; yield [t/ha]; area [ha] ZD1 ; - Chocolate 82258
How many pieces does the chocolate have if I ate 6/7 of it, which is 12 pieces? - Kilometers 82256
What would be the actual distance in kilometers if we measured a distance of 5 cm on a map with a scale of 1: 20,000?
- Powerful 82250
In 5 minutes, it pumps 1240 l of water with the pump. Can two equally powerful pumps pump 500 liters of water in 1 minute? - Multiply x times
Susan divided the number 52 by the number 2 eight times and multiplied it by the number 2 six times. What number did she get? - Diameter 82242
Around the circular pool with a diameter of 5.5 m is a circular wooden terrace with a width of 130 cm. What is the area size of this terrace? - Distance 82240 On a map with a scale of 1:100,000, two lakes are 20 cm apart. What is their distance on a map with a scale of 1:40,000?
- Shaped 82232 How many cubes with an edge of 0.2 dm fit into a box that is also shaped like a cube with an edge of 10 cm?
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