Maths practice for 12-year-olds - page 284 of 304
Number of problems found: 6066
- Tank and water
We poured water into a cylindrical tank with 3.5 liters. If the tank's base diameter is 3 dm, how high is the water level? - Rhombus
PQRS is a rhombus. Given that PQ=3 cm & height of the rhombus is given 2 cm. Calculate its area. - Equation with fractions
Solve an equation: 1- (2x-5)/(6) =3- (x)/(4) It is an equation with fractions. - Chess
How many different ways can you initiate a game of chess (first pass)?
- Cuboid aquarium
Cuboid 25 times 30 cm. How long does the cuboid's third side contain 30 liters of water? - Sisters
Sisters Hanka and Vera go mostly to their grandmother by bicycle. Journey took Hanka 30 minutes and Vera 20 minutes. How long will Vera catch up with Hanka when she starts from home five minutes later than Hanka? - Circles
The area of a circle inscribed in a square is 7. What is the area of a circle circumscribed around a square? - Football season
Throughout the football season gave, Adam 23 goals more than Brano and 16 goals less than Karol. Edo gave the six goals more Dušan. Karol gave five more than Edo. Brano and Edo gave together 17 goals. How many goals did you give each boy, and how many goa - Chicken and rabbits (classic)
Grandmother bred chickens and rabbits. It found that the yard has 25 heads and 70 legs. How many chickens and rabbits breed in the yard?
- Meat
Half a kilogram of pork and three-quarters of a kilogram of beef cost a total 5.1 USD. One-quarter of a kilogram of beef and 1 kilogram of pork costs 4.9 USD. Find the price of 1 kg of each type of meat. - Ratio of perimeters
Rectangle ABCD has dimensions 3 cm and 4 cm, and KLMN rectangle has dimensions 4 cm and 12 cm. Calculate the ratio of the perimeter ABCD and perimeter KLMN. - Cylinder - h2
The cylinder volume is 2.6 liters. The base area is 1.3 dm². Calculate the height of the cylinder. - The carpet
How many meters of carpet 90 cm wide need to cover the floor room, which has a rectangular shape with lengths of 4.8 m and 2.4 m, if the number of pieces on the carpet is needed to be lowest? - Children
Less than 20 children played various games in the yard. They can create pairs, trios, and quartets. How many children were in the yard when Annie came to them?
- Do you solve this?
Determine area S of a rectangle and the length of its sides if its perimeter is 102 cm. - Birthdate
Jane brought 30 lollipops and 24 chewing gum for their friends on her birthday. How many friends does she have if everyone receives the same number of lollipops and chewing gums? How much chewing gum and lollipops have any friends? - Car consumption
The car consumes 7.3 l/100 km. If the diesel price is 1.63 USD/l, how much will it cost to ride 330 km long? - Time
16.2 days ..... how many hours is it? - Cottages
The summer camp has 41 cottages. Each has rooms for three and four. How many of the 140 campers live on three?
Lenka has as many brothers as sisters. Her brothers have twice as many sisters as brothers. How many brothers and sisters are in the family?Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
