Maths practice for 12-year-olds - page 254 of 355
Number of problems found: 7081
- 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 32m and 29m. 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 the straight line representing the number axis, tie together the various points corresponding to the numbers a, 2a, 3a+1 in all possible orders. For each option, decide whether such an arrangement is possible. If yes, give a specific example; if not, e - 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? - Circumference of the garden
The garden is 90 m long. What is the smallest width if it is possible to walk (circumference) in steps of 80 cm or 50 cm? - Land Area from Map
What is the land area in reality if 1 cm² occupies a 1:20000 scale map? - Machine price
After technical improvements, the washing machine cost € 630, which is a fifth more than the original price. How many euros did the washing machine initially cost? - Village Population Estimate
The population of the village rounding up to hundreds is 5600. Most how many inhabitants can live in this village? - Circle simple
The circumference of a circle is 6.28. What is the area of the circle? - The ball
Three friends go to buy a ball, and it costs 300 CZK. Everyone gives 100 CZK. Later, the seller finds out that the ball costs 250 CZK. He will send 50 CZK after the apprentice. The apprentice buys a snack for CZK 20. The shop will return 30 CZK to the boy - Family 8
The father is 38 years old, the daughter is 12, and the son is 14. How many years will a father have as many years as his children together? - Parallelogram perimeter
The ABC triangle with sides a = 5cm, b = 3cm, c = 40mm has the center of the sides of the K,L,M. How many cm have the KBLM parallelogram perimeter? - Average Height of Classmates At the last measurement, 4 classmates were 164cm, 168cm, 172cm, and 176cm tall, and the 5th classmate was 5cm shorter than the average height of the first four. What was the average height of the five classmates in cm?
- Bus Passenger Distribution
There are 36 passengers on the bus. There are seven women more than men and 22 children less than adults. How many men, women, and children are on the bus?
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