Maths practice for 11-year-olds. - page 150 of 224

Number of problems found: 4479

Continent
Uncle Tann travels a lot. In each city, he buys a postcard as a souvenir. Tana divided the postcards for him according to the continents. She found that out of 63,756 postcards, one seventh is from Asia, one quarter is from America, one eleventh is from A
Fabric Suits Length Meters
The cotton fabric in the bale in the store measures 101/5 meters. How many 10/7 meter suits can we sew from the whole bale of fabric?
Bicycle Gear Options
Peter got a new bike for his birthday. His bike was equipped with many gears. How many gear options does Peter have if you have three wheels at the front and eight wheels at the back? List them all
Class children count
How many children are in a class where one-eighth is three children?
Charity Contributions Same Amount
Vojta and Martin have been contributing to charity since the same day. Vojta contributes 110 CZK every week. Martin contributes 85 CZK every week, and in addition, he made a one-off contribution of 300 CZK at the beginning. Calculate how many weeks Vojta
Pexeso
The drawing paper has dimensions of 60cm and 840mm. Pupils have to divide it into squares to make a pexeso. What dimension must squares have if their side is larger than 3cm and less than 10cm?
Dividing Lines into Parts
Divide three lines with lengths of 12 cm, 24 cm, and 64 cm into equally long and, at the same time, the most extended possible parts. How long will the individual parts be, and how many will there be?
Triangles
Ivo wants to draw all the triangles whose two sides have a length of 4 cm and 9 cm, and the length of the third side is expressed in whole centimeters. How many triangles does he have?
Copy center profit
They print 1,300 copies at the copy center. One copy costs 10 cents. The cost of printing one copy is 3 cents. The saleswoman receives €25 per day. How much does a copy center make per day?
Gasoline Tank Volume Positions
The closed petrol tank is a cuboid with dimensions of 80cm, 30cm, and 20cm. The petrol level reaches 6cm below the upper edge of the tank. Determine the amount of gasoline in the tank in liters for all possible, stable positions of the tank.
Carpet area
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
Book pages
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?
Sheet Metal Box Lid
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?

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