Maths practice for 12-year-olds - page 309 of 347
Number of problems found: 6923
- Three siblings
Three siblings have a birthday in one day-today. Together they have 35 years today. The youngest is three years younger than the middle, and the oldest is five years older than the middle. How old is each? - Performance
The same number of tickets sold for 15 CZK, 20 CZK, 30 CZK, and 40 CZK, a total of CZK 13,230 for theatre performances. How many tickets were sold for this performance? - 12 Moons
Good Marry came to ask the twelve Moons for strawberries. All twelve Moons would have picked 1200 strawberries in 20 minutes. However, in 5 minutes the lazy holiday Moons - July and August stopped picking. How many minutes in total will it take collect st - Two numbers
Determine the numbers x and y, so x + y = 8 is true, and the numbers are in the ratio of 4:5. - Water tank 2
The water tank cuboid is 12 meters long and 6.5 meters wide, and 1.2 meters high. How many hectoliters are in the tank when it is filled to 89%? - Brackets
Place one pair of brackets in the expression 20-16 + 10 - 4 - 2 so that the result will be 0. - Buses
At the bus stop at 10 o'clock met buses No. 2 and No. 9. Bus number 2 runs at an interval of 4 minutes and bus number 9 at intervals of 9 minutes. How many times does the bus meet at 18:00 local time? - Image scale
The actual image dimensions are 60 cm x 80 cm and have a reduced size of 3 cm x 4 cm. At what scale was the image reduced? - Trees
Loggers wanted to seed more than 700 and less than 800 trees. If they seed in rows of 37, leave them eight trees. If they seed in rows of 43, leave the 11 trees. How many trees must seed? - Arm-leg
Calculate the length of the base of an isosceles triangle with a circumference of 224 cm if the arm length is 68 cm. - Apples 2
On the first day fell one-third, on the second quarter of the rest and on the tree remained 45 apples? How many apples were originally on the tree? - Troops
When the general lines up his troops in rows of nine, 6 are left over. How many soldiers are in the regiment if we know there are fewer than 300? - Trams
Tram no. 3,7,10,11 rode together from the depot at 5 AM. Tram No. 3 returns after 2 hours, tram No. 7 an hour and a half, no. 10 in 45 minutes, and no. 11 in 30 minutes. For how many minutes and when do these trams meet again? - Soda
A pack of 12 sodas costs 5.04. What is the unit rate in dollars per soda? - Cash back
After a trip, 24 students left more than 650 but less than 690 CZK (Kc). How much does each student receive in return when the amount is divisible by the number of pupils? - Pool 3
When it flows 15 liters/s, how long will the filled pool be in cuboid shape (8m 6m 1.5m)? - Buildings
The school stands 110 m from the church, which is 100 m beyond the town hall. Which buildings are closer to the church, and how many times? - Three buses
Three public transport buses depart together from the bus station in the morning. The first bus returns to the station after 18 minutes, the second after 12 minutes, and the third after 24 minutes. How long will again together at the station? Please expre - Matches
George poured out-of-the-box matches and composed their triangles, and no match was left. Then he tried squares, hexagons, and octagons, and no match was left. How many matches must be at least in the box? - Water pool
A pool with a volume of 990 hl is completely filled if water flows from one tap for 8 hours and from a second tap for 6 hours. The first tap delivers 10 hl more per hour than the second. How many hl per hour does each tap deliver?
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