Maths practice for 11-year-olds. - page 148 of 222

Number of problems found: 4427

Deformation 6260
The carpet is wound on a cardboard roll in the shape of a cylinder with a diameter of d=12cm and a length of l=2m. The rolled-up carpet has an outer diameter of D=38cm, and the thickness of the rug is 8mm. What area can the carpet cover after unfolding? D
Multiply 6257
If we multiply the numbers of the last three pages of the book on pyramids, we get the product 23639616. How many pages does the book have if the last page's number is steam?
On the map
A line 1.5 cm long corresponds to a line 3 cm long on the map. What is the scale of the map?
Freight train
Twenty-five identical freight wagons are connected behind the locomotive. The weight of the locomotive and all wagons is 1009000 kg. The locomotive weighs 84 tons. How many kilograms does one freight car weigh?
Building
We divided 240 boards into two piles in a 5:3 ratio at the building. How many were fewer boards in the lower pile?
Andre
Andre, Thomas, and Ivan split 88 postage stamps in a 2:5:4 ratio. How much did Thomas get?
Granite cube statue
What is the weight of a granite cube with an edge length of 75 cm if one m³ of granite weighs 2.7 tons?
Calculate 6244
Calculate how many dm² of sheet metal it takes to produce a box without a lid measuring 2.1dm, 3.5dm, and 0.5dm in height.
Cubes into cuboid
How many 12-centimeter cubes fit into the block (cuboid) with 6 dm, 8.4dm, and 4.8?
Three pumps
The water tank is emptied with the first pump in 6 hours and with the second pump in 2 hours. All three pumps had to be started at once to be emptied in 1 hour. How long will it take to empty the tank with only the third pump?
Dimensions 6241
The truck's body, with dimensions of 3m, 1.5m, and 0.75m, is full of Sand. If one m³ of Sand weighs 1500kg, what is its weight?
Calculate 6240
The ratio of the two natural numbers is 2:3. The smaller number in this pair is 12. Calculate the larger A number from this pair.
Chewing gums
You will pay 20 CZK less for three than seven chewing gums. How much is one chewing gum, and how much does a 5 pcs package cost?
Length 6235
Length 25m, width 10m, depth 160 cm. How many square meters are needed to line the pool?
Meters 6234
The pool is 25 m long, 10 m wide and deep 8 meters. How many square meters will be needed to line the walls and bottom of the pool?
One-piece 6233
If we take six pieces, we will pay only for four. One piece cost 7, and my mother bought 31 pieces. How much did she pay for the purchase?
Opening 6232
The bank has opening hours from 07:30 to 16:30. How many hours is the bank open?
Frames 6227
For five photo frames, you pay 12 euros more than three frames. How much is one frame?
Centimeters 6220
A pizza in the shape of a circle occupies an area of 94.985 square cm. What is the smallest integer diameter in centimeters that the plate on which we want to place this pizza must have so that the plates do not overlap
Pizza 5
You have 2/4 of a pizza and want to share it equally between 2 people. How much pizza does each person get?

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