Maths practice for 11-year-olds. - page 118 of 226

Number of problems found: 4508

Aquarium
Try to estimate the weight of the water in an aquarium 50cm long and 30cm wide when poured to a height of 25cm. Find the weight of the aquarium's water.
Office painting cost
Our office has dimensions of 5 m by 4.5 m and a height of 2.5 m. How much will it cost to paint it if a liter of paint costs €3.50 (yield 10 m²/l) and the painter asks €1.20 for the job and 1 m² painting? It will need to be painted twice.
Four operations
How many ways can you add +, -, *, / characters among four tens to always get the number 10?
Aquarium water calculation
The aquarium has the dimensions a = 250 cm, b = 50 cm, and c = 60 cm. Water is poured into the aquarium up to 45 cm. Do you calculate how many liters of water are in the aquarium?
Two divided
Two divided by nine-tenths.
Tenths digit
For 10.932, which digit is in the tenth place?
Two dogs
Izzy's dog is 10 1/2 years old. Paige's dog is 18 months old. How many years older is Izzy's dog?
Weigh in total
I put 3/5 kg of grapes into a box, which is 1/4kg in weight. How many kilograms do the grapes and the box weigh in total?
Court field comparison
The tennis court measures 40.20 meters. The football field measures 40.90 meters. How many times is the football field compared to the tennis court?
Children's home
Nicholas gave the children's home 54 oranges, 81 chocolate figurines, and 135 apples as gifts. Every child received the same gift, and nothing was left. a) How many packages could be prepared? b) what did the children find in the package?
A plasticine
Joseph modeled from plasticine. He used 27g of plasticine to model a 3 cm long cube. How many grams of plasticine will it need to mold cubes with an edge of 6cm?
Two 2D shapes
Decide which shapes have more area: (a) a square of 8 cm side, or (b) two rectangles with sides of 5 cm and 15 cm? Write the result as 1 or 2 (rectangles)
Walking Earth explanation
What allows a person to walk the Earth: a) atmosphere b) Earth response c) feet d) rolling friction
Plot
The land is in the shape of a square with a dimension of 22 meters. How much will we pay for the fence around the entire plot?
Pages MO Z6-I-4
Once the king called all his pages and placed them in a line. To the first page he gave a certain number of ducats, to the second he gave two ducats less, to the third again two ducats less, and so on. When he reached the last page, he gave him the approp
Equal temperature
We measured the temperatures of the two cities simultaneously. The temperature in town A was 60 degrees and rose at a constant rate of 2 degrees per hour. The temperature in city B was 40° and rose at a constant rate of 10° per hour. Find the time in hour
Land fencing cost
The land is in the shape of a square with a side of 65.4 meters. Moreover, 1 meter of mesh costs 2.30 euros. How many euros do we pay for fencing land?
Living room floor
The living room has dimensions of 40 dm and 50 dm. A square meter of wooden floor costs 13 euros. How much do we pay to lay a wooden floor in the living room?
Garden fencing calculation
The rectangular garden measures 20 meters and 180 decimetres. How many meters of fencing need to be purchased?
Square area calculation
The town square has the shape of a square measuring 510 meters. What is the size of this square?

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