Maths practice for 11-year-olds. - page 20 of 227
Number of problems found: 4539
- Calculate 83569
Calculate the length of a yard with an area of 9.5 ares if its width is 16 meters. - Paint the walls
It is necessary to paint the walls and ceiling of the warehouse, which is 10 m long, 4 m wide, and 3 m high. How many CZK (Czech crowns) will it cost to paint if it costs 200 CZK to paint 1 m²? - Parallelogram 83558
In a parallelogram, ABCD, the angle at vertex B is 108°. What is the angle size at the vertex D? - Collection 83537
Nine-year-old Lucia is preparing for testing. He solves a collection of 40 tasks per day. He will need 9 days to solve all the tasks. How many days earlier would she finish if she solved 60 tasks a day? - Perimeter 83524
The swimming pool is 25 m x 12 m. The safety coating around the perimeter needs to be restored. One can of paint is enough to paint 15 m. How many cans of paint should be bought? One can cost 300 Sk. How much SK will we pay for the paint? - Deciliters - balls
We placed 10 layers of 100 balls with a diameter of 1 cm in a cube-shaped aquarium with an inner edge length of 10 cm. How many deciliters of water could still fit in the aquarium? - Seven 83500
One and a half hens laid one and a half eggs in a day and a half. How much will six hens lay in seven days?
- Protectors
The nature protectors have pledged to clean the part of the stream that belongs to their municipality. On Saturday, they cleaned one quarter of the length of the entire stream, and on Sunday, 1.5 km, so they cleaned a stream 4 km long over the weekend. Wh - Travelers 83488
Travelers made 2/5 km of journey per day. How long did it take her to cover the distance of 2.4 km? - Calculate 83480
Calculate the length of a side of a rhombus if you know that the perimeter of the rhombus is 19.88 mm and one side is 4.34 mm long. - Titanium 83463
The body of titanium weighs 227 kg and has a volume of 0.05 m³. What is its density? - Diameter 83450
Škoda Kadjar has a wheel diameter of 65 cm. What path will it travel if it turns 100 times? - Described 83448
A square is described as a circle with a radius of 6 cm. How much larger is the area of the square than the area of the circle? - Wardrobe code
Lucia has a lock on her wardrobe that opens with a 4-digit code (such as 0000, 0089, or 9123). Lucia forgot her code. But she knows that the sum of all four digits of her code is 4. How many such codes are there? - Quadrilateral prism Calculate shell area of a quadrilateral prism with a rhombus base with dimensions a=6cm, ha=40mm. The height of the prism is 81 mm.
- Quadrangle ACEG
The figure shows two rectangles ABCD and DEFG, with |DE|=3 CM, |AD|=6 CM, |DG|= 5, |CD|= 10 CM. Calculate the area of quadrangle ACEG. Figure description: the rectangles have one vertex D in common. Rectangle ABCD has twice as long sides as DEFG. All si - Approximately 83408
The volume of the gasoline bottle is 15 liters. What is the weight of an entire bottle of petrol if the empty one weighs 1 kg? The density of gasoline is approximately 730 kg/m³. - Determine 83377
A cork stopper with a volume of 15 cm³ weighs 3 g. Determine the density of the cork. - Garden 83367
How many meters of mesh is needed to fence a square garden with an area of 5,402.25 square meters? - Employee 83313
An employee with 2 children is paid an hourly wage of CZK 198 per hour, a 20% bonus; she received a one-time bonus of CZK 1,000. In a month that had 21 working days, she worked 20 days, and the rest was on vacation. Its average is CZK 206 per hour. He has
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