Maths practice for 11-year-olds. - page 224 of 227

Number of problems found: 4525

Divisibility
Determine all divisors of a number 91.
Cube
Calculate the surface cube with edge 11 dm.
Triangle P2
Can a triangle have two right angles?
Triangle
Prove whether a triangle ABC with the given properties can be constructed: a=8 cm, b=6 cm, c=10 cm.
3-bracket 2
Can the smallest angle in a triangle be greater than 70°?
3-bracket
Can the largest angle in a triangle be less than 20°?
The Line segment
Can we construct a line segment if we know: end point and one point inside line
Garden
How many steps of 64 cm each are needed to walk around the perimeter of a square garden with an area of 1.5 ha?
Angles 1
Is it true that adjacent angles have common arm?
Bricks
Brick has volume 2.4 dm³. How many bricks can drive a truck with a capacity of 15 ton? The density of brick is 2 g/cm³.
Rainfall
The average annual rainfall in our country is 619 mm. How many m³ of water falls on average per hectare?
Special cube
Find the edge length of a cube whose surface area and volume are numerically equal.
Cube
The sum of all edge lengths of a cube is 56 cm. What are its surface area and volume?
Date game
Let now is Tuesday. What day is after 229 days? Write the result as a number: 1=Monday, 2=Tuesday, 3=Wednesday, 4=Thursday, 5=Friday, 6=Saturday, 7=Sunday.
Isosceles triangle
Calculate the perimeter of an isosceles triangle with leg length 87 cm and base length 95 cm.
Minute angle
Find the angle swept by the minute hand of a clock in 30 minutes.
Guess number
With what number should be divided, number 10387 to be reduced by 30%?
Angles
A triangle has one exterior angle of 82°6' and one interior angle of 48°36'. Calculate the other two interior angles of the triangle.
Tourist
Tourists walk at 4.2 km/h. They take a 10-minute break every 6 km. How many kilometres did they walk if they started at 4:40 and finished at 21:40?
Train
A train travels a section of line in 55 minutes at a speed of 70 km/h. At what speed would it need to travel to shorten the journey time by 16 minutes?

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