Maths practice for 11-year-olds. - page 223 of 227
Number of problems found: 4525
- Water
Into a full cylindrical tank high 3 m with a base radius of 2.5 m, we insert a cuboid with dimensions 1.7 m, 1.3 m, 1.9 m. How many liters of water will overflow out? - Expression
If it is true that (p + 9 m)/(m) = -19, then the value of the expression (13 p)/(11 m) is: - News
Of 28 students, 10 The economist subscribe to the first magazine, 10 Pravda subscribe to the second magazine, and 18 subscribe to neither. How many students subscribe to both magazines? - Three numbers
Using the digits 1–9, form three-digit numbers such that their sum is as small as possible. What is the value of this sum? (Use each digit exactly once.) - Compare
Compare fractions (34)/(3) and (12)/(4). Which fraction of the lower? - Brick
The isosceles scale has all bricks; the second weight is 1 kg, and the 1/5 of brick is on one side. The balance is in equilibrium. What is the weight of a brick? - Sea on the Moon
Assume that the Moon has a sea with the same composition as Earth's (it has the same saltwater density). Calculate the boat's dive floating in the sea on the Moon when on Earth, it has dived 3.9 m. Consider that the Moon has 6.5-times smaller gravitationa - Book
The printer used 4201 digits to number the pages of the thick book. How many pages does this book have? - Floor
A room has a floor area of 33 m² and a width of 4 m. What is the perimeter of the room as shown on a map at scale 1:75, measured in centimetres? - Cube corners
Peter cut the wooden cube with edge 100 cm in 2 corners of the cube with edge 5 cm. How many cubes of edge 5 cm can Peter even be cut? - Garden
A garden has two opposite parallel fences separated by a distance of 39.7 m. The lengths of these two fences are 73.2 m and 63.6 m. Calculate the area of this garden. - Car - simple
A car is travelling at 77 km per hour. What distance does it cover in 1 minute? - Stand-by power
Determine the year-round consumption of appliances in standby mode. Standby mode is a routine in the unit that is continuous for 24 hours and consumes a tiny amount of electricity. Typically are televisions, electric ovens, radios, computers, monitors, sa - Colors
Arnold received 7 coloured pens of different colours for their birthday. In how many ways can they be arranged side by side in a pencil case? - Rounding
Round the number 235 twice: first to the nearest ten, then to the nearest hundred. (This is called double rounding.) - Plane
How many parts are divided in the plane 9 parallels? - Area
Calculate: x = 8 m² + 8 dm² + 8 cm² - Denominator
Calculate the missing denominator x: (119)/(17) = (7)/(x) - Hole
A hole with dimensions 2.7 m × 20 m × 15.8 m is filled with 282 m³ of soil. What percentage of the hole is filled? - Divisibility 2
How many divisors have integer numbers 80?
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