Maths practice for 12-year-olds - page 99 of 350

Number of problems found: 6995

Quadrilateral 67384
Construct a quadrilateral ABCD if AB = 10cm, AD = 6cm, DC = 6.5cm and angle BCD = 90 degrees
Circumference 67334
What is the area and circumference of a diamond whose diagonals are 7 dm, 12dm in length, and 6 dm in height?
Considering 67324
Susan has an old stool - a cube with an edge length of 80 cm. She wants to sew a new cover for her. How many square meters does the fabric consume, considering adding 15% for stitching and folds?
Divisible 67304
Which number should replace the letter X so that the number 7618X is divisible by three and four?
Calculate 67294
Calculate the sum of all divisors of the number 70.
Cube-shaped 67274
In the basement, they have a cube-shaped room with an edge length of 2.5m, which has no windows, only a door with dimensions of 2*1m. They decided to make a Finnish sauna in it. How many square meters of wood paneling will they need?
Rectangular 67244
The department store has a rectangular car park with a length of 48 m and a width of 65 dm. How many cars can there fit when each car needs 2.5 m²?
A rectangular prism
A gift box in the shape of a rectangular prism measures 8 by 10 inches. What is the least amount of wrapping paper needed to wrap the gift box? Explain. What is the surface area of the gift box?
Two-thirds 67134
Find a number whose two-thirds are two less than its three-quarters.
Adeline
Adeline helped her mother make 7/9 liters of lemonade to treat their guests. She poured the lemonade into cups. Each cup had a capacity of 1/6 liters. She filled some cups entirely except for 1 cup. How much was lemonade in the cup that was not filled?
Information: 67064
The package of beef bought in the store had this information: 0.520 kg and a price of 64 CZK. How many crowns does 1 kg of this type of meat cost?
Measuring 67014
Gold's density is 19200kg/m³. How much does a gold bar weigh 25cm, 8cm, and 37mm?
Surface 67004
A block with a square base with an edge length of 4 dm has a surface area of 112 dm square. Find its height.
Cyclist 66904
The athlete ran on a 10 km route at a speed of 5 m/s, 10 minutes after him. A cyclist drove at a speed of 30 km/h. Who will be at the finish first (A or B)?
Five-digit 66894
Create all five-digit numbers in ascending order from three, four, and two zeros.
Strawberries - pulp
Marta and Alice bought their children strawberries. They ate most of them, each making pulp from the remaining strawberries. Marta filled her entire cube-shaped container with dimensions 5.2cm, 1dm, and 8.3cm; Alice had a cube-shaped container with an edg
Precipitation 66874
The total precipitation for one day reached 22mm. How many hectoliters of water have rained on a rectangular garden measuring 32m and 45m?
Kilograms 66864
The sculptor composes an ice city from ice cubes. The cube with an edge length of 2 dm weighs 7.2 kg. How many kilograms is an ice cube with an edge length of 6 dm heavier than it?
Milliliters 66834
The cube-shaped vase contains 320 ml of water and reaches a height of 5 CM. How many milliliters of water can we pour into the vase so the water does not run out?
Expression 66754
Find the largest natural number n for which the expression value (37-2n) / 3 equals the natural number.

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