Maths practice for 12-year-olds - page 153 of 355
Number of problems found: 7085
- Brno-Tachov highway
The distance Brno-Tachov is 360 km. At 8:00 AM, a car travels from Brno on the highway at an average 90 km/h speed. An hour later, a vehicle leaves Tachov towards Brno, whose average speed is 110 km/h. Calculate how far apart they will be at 11:00 AM when - Determine
Determine the salary of a part-time worker if the employer deducted (taxes, etc.) 840 euros from him, which was 6/50 of his salary. - Erik
Three friends, Peter, Erik, and Milan, shared 420 euros in a ratio of 1:2:3. How many euros did Erik get? - The reservoir
The reservoir is a sphere with a diameter of 7.5 m. How many hectoliters can it hold at maximum capacity? - Sphere volume
The surface of the sphere is 535 m². What is its volume? - Barrel shell
The barrel-shaped cylinder has a volume of 9.42 hl, and the inner diameter of the bottom is 12 dm. Calculate the area of the barrel shell in m². Solve in general first. - Common divisor
All common divisors of headings 90 and 48 - Bus departure time
The first bus leaves every 10 minutes, the second every quarter of an hour, and the third every 18 minutes. At noon, all three lines left together from the station U Kachny. At what time did all the lines go again at the same time? - Shopping discount
The Kováčov family makes a purchase at a nearby store once a week for €45. After the opening of the new shopping center, the family's monthly purchases are a tenth cheaper. Calculate how many euros the Kováčovci will pay per week for shopping after the op - Students
There are 2/6 girls out of 1050 students at the school. Of these, 4/5 have another sibling. How many girls are in school? How many boys are in school? How many girls do not have a sibling? - Second hand path
What path will the end of the second hand make in 24 minutes if it is 5 cm long? - Circle diameter
Calculate the diameter of a circle whose area in cm² and the circumference in cm are expressed by the same number. - The quotient 2
The quotient of the quantity k minus 10 and m. - The box
Does the box contain three light bulbs with a wattage of 40 W and two pieces of light bulbs with a wattage of 60 W. What is the probability of the event that two randomly selected light bulbs will both be 40 W? - They competed
On April 1, the seventh graders competed for the worst written dictation. The winner was Jožo Poleno, who left out a letter in a third of the words of the dictation, made boldface in a quarter, forgot the soft part in a sixth, and despite all his efforts - The volume
The volume of the rotating cone is 376.8cm³. The height of this cone is one dm. Calculate the diameter of the cone base. - Number sign filling
Fill in the signs to apply 5 5 5 5 5 = 14 - Metronome beep
Two differently set metronomes used in music education to keep rhythm were started simultaneously. The first beeps after 3 seconds and the second after 7 seconds. How often will the beep sound together between the 1st and 2nd minutes? - Honor graduate percentage
As many as 62.5% of residents at the business academy graduated with honors. How many high school graduates would there be if 30 students graduated with honors? - Pizza fractions
Ann ate a third of a pizza and then another quarter. Total part of pizza eaten by Ann and how much pizza is left?
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