Maths practice for 12-year-olds - page 210 of 350
Number of problems found: 6986
- Smaller 7840
Which number is 2a-b smaller than a + 2b? - Younger 7832
Dad is r years old, and Mom is two years younger. The son is 20 years younger than the father. How old are they? - Half-sphere roof
The roof above the castle tower has the shape of a 16 m diameter half-sphere. What is this roof's cost if the cost of 1 square meter is 12 euros and 40 cents? - Hemisphere of ice-cream
The ice cream maker sold 6l of ice cream a day. How many hemisphere-shaped portions with a diameter of 6 cm could he make from the ice cream sold? - Naturally 7826
The ratio of two natural numbers is 2:3. The smaller number naturally is 12. What is the product of these numbers? - Oranges 7824
I have 20 pieces of fruit. How many apples when pears are nine times more than oranges? - Times 7822
How often is D (24.60) less than n (24.60)? - Integer 7814
The small circle in the picture has an area of 3.5 cm². It touches from the inside and passes through the center of the large circle. What is the area of a large circle? The result round to an integer. - Society 7809
There are eight boys and twelve girls in the secret society. How many boys must they accept so that the ratio of boys to girls is 3:4 - The number
What number of 1 cm cubes are required to make a 4 cm cube? - Mathematics 7806
Janko has committed that his average grade in mathematics will be exactly 2 at the end of the semester. However, so far, he has received grades 3 and 4. He knows that by the end of the year, he will receive four more grades from the tests. What are the wo - Plates - gold
The father bequeathed to his two sons 4 gold plates in the shape of a square, which were 1 mm thick. The side lengths of these plates were 5 cm, 10 cm, 10 cm, and 15 cm. The sons were to receive the same amount of gold. How many gold plates did each son r - Children's 7802
The garden children's pool has the shape of a cylinder with a base diameter of 3.2 m and a depth of 60 cm. How many hours and minutes will it fill 10 cm below the edge of 0.5 l of water per second flows through the tributary? Round to whole minutes and wr - Numbers 7797
Find out which numbers are seven from the number 27 on the number axis. Write their sum. - Pages counting
There are pages numbered 2 to 104 in the book. How many digits have to be printed to number the pages? - Circle 7794
Draw a circle k, r = 4cm, and divide it into two parts in a ratio of 1:5. - Jill's
Jill's mom stored some of the honey in a container containing 3/4 of a gallon. She used half of this amount to sweeten tea. How much was honey in the cups used in the tea? Express your answers in cups. - Aquarium
Can 30 liters of water fit in a cuboid aquarium with dimensions a = 3dm b = 6dm c = 5dm? - On Sunday
On Sunday, the temperature reached a high of 38° above 0. That night it dropped to 23° below 0. What is the difference between the high and low temperatures for Sunday? - Ribbon on the cube
A cubical gift box is tied with a piece of ribbon. If the total length of the free ends and the bow is 18 inches, what is the length of the ribbon used? (Each side of the cube is 6 inches).
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