Maths practice for 12-year-olds - page 250 of 347
Number of problems found: 6932
- Suzan
Susan's age will be after 12 years, four times as much as twelve years ago. How old is Susan now? - Crates of apples
Martin tore three and a half crates of apples in two and a quarter hours. How many crates will it tear in one hour? How long will he have to tear to meet the daily standard of 10 crates? - Crumbs Brought by Ants
In the evening, four ants counted the crumbs they had brought. The first ant had 1.5 times as many as the second, the second ant had half as many as the fourth, and the third ant had twice as many as the second. They had 26 crumbs in total. How many crumb - Divisible number
Six cards with digits 1, 2, 3, 4, 5, and 6 are on the table. Agnes made a six-digit number from these cards, divisible by six. Then she gradually removed the cards from the right. A five-digit number divisible by five remained on the table when she remove - Unknown numbers
The sum of two consecutive natural numbers and their triple equals 92. Find these numbers. - Powder washes
Mrs. Janka bought washing powder that weighed 5 kg. The powder is enough for 50 washes. However, she decided to fill the measuring cup with powder only three-fifths of the volume. How many washes does the powder last for her? - Ľé sweets
There are 20 sweets in the bag. Some are chocolate, other coconuts, and the remaining marzipan. Chocolate is four times more than coconut. Marzipan's less than chocolate. How much is in a bag of coconut sweets? - Clock angle
What angle do the clocks make at 4:30? - Deca-kilogram
70g of yeast is needed for 30 days of flour. How many dags of yeast are required for 1.5 kg of flour? (note: the decagram has the mark dag and not dkg - it would be a deca-kilogram) - Triangle Height from Area
The parallelogram has a side 6 cm long, and the height on this side is 4 cm long. What is the height of an isosceles triangle with a base 6 cm long and the same area? - Soccer ball
How much does a soccer ball cost, and 6/7 of the price is € 12? - Garden fencing
The garden has the shape of a rectangle with dimensions of 32 m and 29 m. We must fence it all off, except for the entrance gate, which will be 4 m long. What is the size of the garden? - Cake packing
Grandma wrapped two-fifths of the cake for her granddaughter, Mary, and Eme wrapped one-quarter of the cake. What part did Grandma pack in the science, and what part remained with Grandma? - Plane speed
When it flies 106 km in 30 minutes, at what speed does the plane fly? - Simple equations
Solve the system of equations: 5x+3y=5 5x+7y=25 - Solving Linear Equation
Solve the equation: 0.5 • (3+ x) -0.2 • (0.5x-5) = 0 - Quadruple Number Range
A quadruple number from 2 to 17 is a number? - Number line arrangement
On a number line, arrange the points corresponding to the values a, 2a, and 3a + 1 in all possible orders. For each arrangement, decide whether it is possible. If yes, give a specific example; if not, explain why. - Three cubes
The body was created by gluing three identical cubes. Its volume is 192 cm³. What is its surface in dm²? - Filling Pool to Height
The pool is 15m wide and 40m long and should be filled with water to a height of 2.5m. The water flows at a rate of 400 hl per hour. How many hours will the pool be filled to the required height?
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