Maths practice for 12-year-olds - page 191 of 350
Number of problems found: 6986
- Withdrawn 15713
The ATM had 33250 euros on Monday. 10/25 was withdrawn from it on Tuesday, and 2/5 was withdrawn from the same ATM on Wednesday. How many did they pick on Tuesday, and how many on Wednesday? How many euros remained in the ATM? - Diameters 15683
How many ball shots with diameters of 2 mm can be made of 1 kg of special metal alloy with a density of r = 7550 kg/m³? - Father and daughter
The father is 36 years old; the daughter is 20 years younger. What will be the ratio between them if they are ten years older? - Ages
The father is 36 years old, and his daughter is four years old. Write down the ratio of the age of the father and daughter. In what ratio will the ages of father and daughter be after four years? - Age ratio Janko is 14 years old. The age ratio of Janka and Zuzka is 2:3. What was the ratio seven years ago?
- Sprinter 15523
The sprinter ran 101 meters in 10 seconds. At what speed in km/h did he run? - Sum of the edges
The sum of the lengths of all cube edges is 72 cm. How many cm² of colored paper are we going to use for sticking? - Parallerogram
The ABCD parallelogram is a = 2.5 cm, height to side a is 7.2 cm and height to side b is 4 cm. Find the side length b. - Rate 3
A liquid is heated at a rate of 5 degrees Celsius per minute. If the temperature now is at 39 degrees Celsius, how long will the temperature be by 94 degrees Celsius? - Average speed
The average speed of a pedestrian who walked 10 km was 5km/h, and the average speed of a cyclist on the same track was 20km/h. In how many minutes did the route take more than a cyclist? Q - Expression 15443
The expression 2n + m = 52, please express an unknown n. - Volume of the cone
Find the volume of the cone with the base radius r and the height v. a) r = 6 cm, v = 8 cm b) r = 0,9 m, v = 2,3 m c) r = 1,4 dm, v = 30 dm - Dimensions 15253
Our office has dimensions of 5 m by 4.5 m and a height of 2.5 m. How much will it cost to paint it if a liter of paint costs €3.50 (yield 10 m2/l) and the painter asks €1.20 for the job and 1m square painting? It will need to be painted twice. - Return 15193
Fiona sets off from the tower after Shrek at 9:10 at a speed of 6 km/h. Shrek starts to meet her from the swamp at 9:50 at a speed of 4 km/h. At 10:50, they meet and return back to the swamp at a speed of 4 km/h. What time does he arrive at the swamp? - Dimensions 15133
The aquarium has the dimensions a = 250 cm, b = 50 cm, and c = 60 cm. Water is poured into the aquarium up to 45 cm. Do you calculate how many liters of water are in the aquarium? - Calculate
Calculate the surface of a regular quadrilateral prism whose base edge is 2.4dm and the height of the prism is 38cm. - The prison ball
Calculate the density of the material from which the prison ball is made if you know its diameter is 15cm and its weight is approximately 2.3kg. With the help of mathematical-physicochemical tables, estimate what material the ball is made from. - Two dogs
Izzy's dog is 10 1/2 years old. Paige's dog is 18 months old. How many years older is Izzy's dog? - Dimensions 14883
Žofka decided to wallpaper one side of her room. How long does he have to go to school if the dimensions are 3 m and 2.4 m? - Equilateral 14873
There is a circle with a radius of 2.5 cm and point A, which lies on it. Write an equilateral triangle ABC in the circle.
Do you have unsolved math question and you need help? Ask a question, and we will try to solve it. We solve math question.
