Maths practice for 12-year-olds - page 295 of 347
Number of problems found: 6923
- Cash registers
When eight cash registers are open in the grocery store, customers wait for an average of 12 minutes. What will the waiting time be if the other two cash registers open? - Age difference
Milo and George are a total of 56 years old. Milo is eight years younger than George. Please find out how old each of them is. - Horse distribution
The king distributed his horses to the three sons in a ratio of 7:6:4. The eldest son received 63 horses, the most of all the brothers. How many horses did the king share with his sons? - Excavator
The excavator bucket capacity is 0.5 m³. Determine the mass of sand that the excavator picks up. The sand density is 1700 kg/m³. - Chocolate box
Peter ate one-sixth of the candy from the box of chocolates, and ten candies increased him. How many candies did Peter's box of chocolates have? - Forest cleanup
A group of nature conservationists (a total of 28 members) and a sports team (16 members) worked for 7 days to clean up the forest park with an area of 10 ha. How many days would conservationists have to work without the help of athletes? - Plot dimensions
Calculate the actual proportions of the rectangular plot in meters, which has dimensions of 70 mm and 90 mm, on a 1:2000 scale plan. - Football tickets
Adam was at some of his favorite football team's home games last season. Sometimes, he bought a seat ticket for €9, sometimes a standing ticket for €5. He spent a total of €76. How many times did Adam buy a seat ticket, and how many times did he buy a sta - Honor students
In the classroom, 60% of students have good academic results. 20% of them are honored. What percentage of students in the class are honored? - Steel production
45% of pig iron is obtained from iron ore, and 70% of steel from it. How much steel is made from 100 tons of iron ore? - Oats supply
Five horses will eat through the oat supply in 15 days. How many days will the supply last for three horses? - Number puzzle
Three times the unknown number minus ten is less than one hundred, as one hundred is more than twice that number. Which number is it? - Circular base
Find the radius of the circular base of the vessel, whose perimeter is 2.51 m. Write the result to one decimal place in meters. Via the π sign - Ludolph's number - Monthly revenue
The private store earned CZK 28,150 weekly, 22% of the average monthly sales. Calculate the average monthly revenue. - Footpath area
A footpath 50 cm wide circles the circular flowerbed, with a diameter of 3.6 m. Calculate the footpath area. - Brick delivery
The truck driver drives bricks for construction. If he went three times a day, he would produce the bricks needed for construction in 12 days. How many times a day does he have to go to finish work three days earlier? - Trapezoid drawing
Draw a trapezoid with arms 4 cm and 7 cm long and with bases 3 cm and 5 cm long - Digits of age
The product of the digits of Andrew's age six years ago is the same and not equal to 0. Andrew's age is also the youngest possible age with these two conditions. After how many years will the product of the digits of Andrew's age again be the same as toda - Birthday ages
Grandma and her granddaughter Barunka have a birthday on the same day. During six consecutive birthday celebrations, Grandma's age was always divisible by Barunka's age. How many birthdays did Grandma celebrate at the last of these six celebrations? Grand - Digit count
How many numbers from 0 to 999 contain at least one digit, 5?
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