Maths practice for 11-year-olds. - page 145 of 224
Number of problems found: 4479
- Truck Journey Time
The truck driver left Prague at 7:20 a.m., took a twenty-minute break in Poděbrady, and reached Hradec Kralové at 8:55 a.m. How long did the whole journey take (including a break)? How long was the ride itself? - Wallpaper for Room Walls
How many square meters of wallpaper do we need to glue the room walls with dimensions of 3 m and 4 m if the room's height is 2.5 m? - Cube edges
The sum of the lengths of the cube edges is 48 cm. Calculate the surface of the cube. - Circle circumference
Calculate the circumference of a circle if its area is 706.5 cm² - Two angles
The triangles ABC and A'B'C 'are similar. In the ABC triangle, the two angles are 25° and 65°. Explain why in the triangle A'B'C 'is the sum of two angles of 90 degrees. - Solving Linear Equation
Solve the equation: (2v + 2) / 8 = (v-7) / 4-v - Solve Equation Fractions Solve the equation: 1/5. (a-3) -1/3. (a-5) = 1
- The diagram
The diagram shows a cone radius of 8cm and a height of 10cm. How long is the diameter of the base? - Farm Land Crops Area
The farm (ZD) grows corn on a third of its land, barley on a quarter, half of the remaining acreage is planted with clover, and the last 9 ha is reserved for growing cabbage. What is the size of the farm? - Curved surface area CSA
A cylinder 5cm high has a base radius(7/2) cm. Calculate the curved surface area. - Solve Exponential Equation
For n ϵ N solve: 100 = (0.01n)² - Wooden Prisms for Cubes
In the toy factory, they produce dice in the shape of cubes with an edge of 3 cm from wooden prisms with dimensions of 3 cm, 3 cm, and 3 m. How many prisms do they need to make 1000 cubes? - Girls to Students Ratio
There are 26 pupils in the 7th grade, of which 10 are girls. Write down the ratio of the number of girls to the number of students. Adjust the ratio of this task so that the numbers are as small as possible. - 3 cats
Three cats eat three mice in 3 days. How many mice will be eaten by ten cats in 10 days? - Triangle Height Calculation
Calculate the height on the d side of the BCD triangles: d = 0.4 m and S = 10.04 dm2 - Fraction of a Number
As I calculate 1/12 of 28 thousand - Bus vs train Milada took the bus, and the journey took 55 minutes. Jarmila was 1h 20 min by train. They arrived in Prague at the same time, 10h45 min. At what time did each have to go out?
- Cardboard box
The computer monitor's cardboard box has 75 cm, 12 cm, and 5 dm. How many square cents of the carton are needed to make this box? Add 18 dm² to the folds. - Painter
If one liter of paint covers an area of 5 m2, how much paint is needed to cover: a) rectangular swimming pool With dimensions of 4m x 3m x 2.5m (the Inside walls and the floor only) b) the Inside walls and floor of a cylindrical reservoir with - Three friends
Three friends had balls in a ratio of 2:7:4 at the start of the game. Could they have the same number of balls at the end of the game? Write 0 if not, or write the minimum number of balls they had together.
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