Maths practice for 12-year-olds - page 282 of 347
Number of problems found: 6923
- Summerjob
Milan saved a quarter of the money from the summer job, bought a winter jacket for half, bought gifts for his parents and siblings for a sixth, and still had CZK 400 left. How much did Milan earn? - Shelf lengths
The carpenter cut two identical pieces into shelves from a 2-meter longboard. He cut the rest into four side shelves of 20 cm. How long are the shelves? - Settlements distance
On the map of Kosice with a scale of 1:7,000 is the distance between the housing estate NadJezera and the housing estate Tahanovce 9 cm. What is the actual air distance of these settlements? - Sunflower Field
The trapezoidal sunflower field is located between two parallel paths spaced 230 meters apart. The lengths of the parallel sides of the field are 255 m and 274 m. How many tons of sunflower will come from this field if the hectare yield is 2.25 tons? - Ferry distance
Calculate the actual ferry length between the measured and the new measure on the map 3 cm M 1:300,000 - Magnet proportion
The brothers collect magnets. Andrew has 32, 18 he kept. He gave the rest to his brother. In what proportion did they split the magnets? How much more should he give to Ondřej's brother so that the ratio of numbers is 3:5? - Student plans
One-third of the 8 A class student wants to go to high school after finishing primary school, and half of the students are interested in the field of study. The remaining four have not yet been decided. How many students are there in 8 A? - Small city
The length of the street is 230 m. What will its image length be on the plan at a scale of 1:2500? - Orchard ratios
One gardener has 8 apple trees and 2 pears in his set, and the other has 12 apple trees and 3 pears in his set. a/ which gardener has more apple trees per pear? b/ what is the ratio of apple and pear trees in individual orchards? - Tulip planting
The gardener planted 3/7 of the prepared tulips on the first and 1/7 on the second. What part of the prepared tulips did he already plant? What part does he have left? Can we calculate how many tulips there are? Which data is missing? - Road length What is the actual length of the road, which measures 5 cm on the map, if the scale is: a / 1:500, b / 1:1,000 c / 1:1,000,000?
- Class
In a class, there are 32 pupils. Of these are eight boys. What percentage of girls are in the class? - Speed limit
The maximum allowed speed in the village is 50km/h. The police measured that the car crossed the 800 m long section in 40 seconds. Was the driver fined for exceeding the speed limit? - Equation solutions
The solution to the equation 3x = 8x is a / no real number b / x = 8/3 c / x = 3/8 d / x = 0 e / infinitely many solutions - Bus intervals
Four bus lines departed from the terminal together at 5:00 AM. Line A runs at 15-minute intervals, Line B at 6-minute intervals, Line C at 20-minute intervals, and Line D at 8-minute intervals. At what time do all four lines depart from the terminal simul - Elevator
The panel house has ten over-ground stories and four underground. The lift goes from the ground floor to the 2nd floor, then down to the 3rd underground floor, nine floors up, and finally four floors down. To what floor does the elevator arrive? How many - Grandmother
A grandmother wants to divide candies among her grandchildren. If she gives five candies to each, she is three short. If she gives four candies to each, she has three left over. How many grandchildren does she have, and how many candies does she have? - Toothpaste duration
A full tube of toothpaste is enough for one family member for six weeks. How long will three family members last? - Airport
Planes on route A depart from the airport every third day and on route B every fourth day. On 5 May, planes on both routes departed. Will planes depart on the same day again this month? If so, when? On what date in June will planes depart on both routes? - Typing time
A typist with an average speed of 250 keystrokes per minute can type a text in 16 minutes. How many minutes longer would it take to type the same text at an average speed of 200 keystrokes per minute?
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