Maths practice for 12-year-olds - page 264 of 347
Number of problems found: 6923
- Blades
1st blade 2,5 m, 2nd blade. .1.75 m. How many of the same long pieces of these two blades can do the biggest? How long is one piece? - Discount percentage
The customer must buy goods worth CZK 3,800 without VAT and receive those worth CZK 3,340 without VAT. What percentage is the discount? - Three workers
Three workers were paid for their work. The first earned € 50, the second € 100, and the third € 60. For further work, we should receive € 735 together. How do you divide that amount to be distributed in the same proportion as the first job? - LPG recovery
Peter bought an LPG car. A liter of LPG-liquefied petroleum gas costs EUR 0.50/liter, and the price of gasoline is EUR 1.30/liter. Peter's used car cost 2950 Euros. How many kilometers does he have to drive to fully recover the car's value by going cheapl - Ratio simplification Express the ratio in the basic form. a) 1cm: 1m b) 3 ha: 30 a c) 50 kg: 1 t d) 2.5 m: 10 cm
- Cleaning windows
The cleaning company has to wash all the school windows. On the first day, one-sixth of the windows are washed. The next day, three more windows are washed than the first day, and the remaining 18 windows are washed on the third day. Calculate how many wi - Candies
There are red, blue and green candies in a bag. Red to green is in the 6:11 ratio, and blue to red is in the 7:5 ratio. In what proportion are blue to green candies? - Coin ratio
Martin has metal coins saved up in the cash box. Crowns, two-crowns, and five-crowns. The ratio of crowns to five-crowns is 7:4, and five-crowns to two-crowns is 2:9. What is the ratio of crowns and double crowns? - Grand Pardubice Steeplechase
George decided to divide the winnings from the bet in Grand Pardubice Steeplechase (Velká Pardubická) between himself and his three younger brothers according to age in the ratio of 2:3:5:7. They paid each amount in whole crowns. One of the amounts was CZ - Linear equation
Determine five solutions to the equation of two unknowns. Write as arranged pairs and draw in the graph. What does a diagram of a linear equation look like? 2x + 3y = 7 - School
The headteacher considers the distribution of pupils in a race in groups of 4, 5, 6, 9, or 10. How many pupils must have at least one school option? - Nuts
500 g of hazelnuts cost 150 Kč, 2 kg of walnuts cost 280 Kč, and 20 dag of peanuts cost 32 Kč. 1. How much do we pay for 150 g of peanuts? 2. How many grams of walnuts cost 42 Kč? 3. How much do we pay for 150 g of a mixture that the seller blends for us - Tour circuits
Visitors to the castle can choose from three tour circuits that last 35, 50, and 70 minutes, including a short break for the guide. At 8 o'clock, the guides will go out with their groups on the route. How long would it take to meet again if everyone follo - Balls groups
Karel pulled the balls out of his pocket and divided them into groups. He could divide them in four, six, or seven, and no ball ever left. How little could be a ball? - Time clock
What are the angles of the hour hand and the minute hand if it is 0:40? - Seamstress work
Eight seamstresses have to complete the order in 16 days. After four days, the two seamstresses switched to another job. In how many days will the order be fulfilled? - Two rooms
If a woman cleans the room in 30 minutes and a man in 90 minutes, how long will it take them to clean two rooms? - Dividing
Divide the three-line segments 13 cm, 26 cm, and 19.5 cm long for parts so that the individual pieces are equally long and longest. How long will each part be, and how many parts will there be? - Seagull
An artificially created island in the shape of a circle with a radius of 50 m is overgrown with grass. The only exception is a landing area for helicopters in the shape of a rectangle measuring 15 m and 8 m. What is the probability that the flying seagull - Land exchange
Mr. Sova had a plot of land with an area of 3600 m². However, he exchanged it for another square plot, which was 5 m larger. How many m² does the larger land now have?
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