Maths practice for 12-year-olds - page 307 of 347
Number of problems found: 6932
- Construct 1
Construct a triangle ABC, a = 7 cm, b = 9 cm with a right angle at C, and construct the axis of all three sides. Measure the length of side c (and write). - The pot
The diameter of the pot is 38 cm. The height is 30 cm. How many liters of water can fit in the pot? - Ships
The red ship begins its circuit every 30 minutes. The blue boat begins its circuit every 45 minutes. Both ships begin their sightseeing circuit in the same place at the same time, always at 10:00 o'clock. a/What time does the boat meet again? b/How many t - Rectangle - parallelogram
A rectangle is circumscribed by a circle with a radius of 5 cm. The short side of the rectangle measures 6 cm. Calculate the perimeter of a parallelogram ABCD, whose vertices are the midpoints of the sides of the rectangle. - The port
Four ships Berthed in the port. Together, sail from a port. The first ship will return to port every two weeks, the second after four weeks, the third after eight weeks, and the fourth after 12 weeks. After how many weeks do all the boats meet at the port - TVs
Production of television sets increased from 3,500 units to 4,200 units. Calculate the percentage of production increase. - Minutes
Determine the difference in minutes: T1 = 2 3/20 h T2 = 2.3 h - Cube 5
The surface of the cube is 15.36 dm². How will this cube's surface area change if the edges' length is reduced by 2 cm? - Metal sheet
The box has the shape of a cube with an edge length of 50 cm. How much m² of sheet metal is needed to beat a box if we add 20% on the folds of the lid and walls? - Nectar
Nectar collected by bees contains 70% water. The nectar of the same process produces honey which has 19% water. How many kilograms of nectar do bees need to collect to make 1 kg of honey? - Field on plan
The plan has a scale of 1:2500. Determine dimensions in centimeters of the plan if the field has a length of 310 meters and 182.5 meters. - Shepherd
A shepherd has fewer than 500 sheep. When lined up in rows of 2, 3, 4, 5, or 6, there is always one remaining. However, they can be lined up in rows of 7 with none left over. How many sheep does the shepherd have? - Plum
On the platter are plums. How many were there if its have to be able to share equally among 8,10, and 12 children? - Paper squares
We need to cut a paper rectangle measuring 69 cm by 46 cm into the largest possible identical squares. Calculate the side length of the squares and their number. - Motor oil
Thirty liters of oil cost 28.80 Euros. How much cost a liter? - Tram stop
At a tram stop, trams No. 4 and No. 5 were both present at 10:00 AM. Tram No. 4 runs every 5 minutes and tram No. 5 runs every 7 minutes. How many times will both trams be at the stop at the same time before 12:00 noon? - Steps
Peter's steps are 70 cm long, and John's are 45 cm long. After how many meters do their footsteps meet? - Wipes
The mummy wiped out the square wipes, and the veil was next to each other on the cord stretched out between the two trees. She used a cord of 7.5 meters in length, requiring about 8 dm on each side of the trunk. All wipes are 45 cm wide. The mummy leaves - Square grid
A square grid consists of a square with sides of a length of 1 cm. Draw at least three patterns, each with an area of 6 cm² and a circumference of 12 cm, and their sides in a square grid. - Buses 4
Intervals: 1st bus 40 min. 2nd bus 2 h 3rd bud 20 min How long will it take them to meet - as soon as possible?
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