Maths practice for 12-year-olds - page 337 of 362
Number of problems found: 7223
- Coins
One hundred coins, only 20-cent and 50-cent coins, were in the ticket machine. The total was 29 euros and 60 cents. How many were in the ticket machine coins, and which type? - Pair
The pair have been together 57 years. He has two times as she was when he was equal as she has today. How old are they? - Equation
Solve the equation and check the result: 1.6x - 3/2 + x - 9,8 = x + 0,4/3 - 7 + 1,6/6 - Garden pond
The concrete garden pond has the bottom shape of a semicircle with a diameter of 1.8 m and is 72 cm deep. Daddy wants to make it surface. How many liters of water are in the pond if the water level is 33 cm? - Rabbits
In the hutch are 48 mottled rabbits. Brown is 23 less than mottled, and white is 8 times less than mottled. How many rabbits are in the hutch? - Coins
On coins found, it was stated that from the year 87 BC. Is it right? - Tank and water
We poured water into a cylindrical tank with 3.5 liters. If the tank's base diameter is 3 dm, how high is the water level?
- Rhombus
PQRS is a rhombus. Given that PQ=3 cm & height of the rhombus is given 2 cm. Calculate its area. - Equation with fractions
Solve an equation: 1- (2x-5)/(6) =3- (x)/(4) It is an equation with fractions. - Chess
How many different ways can you initiate a game of chess (first pass)? - Tablecloth
I embroider a tablecloth in 20 days, but if I embroider for 3/4 hours a day, I have embroidered it for 15 days. How long do I embroider a day? - Cuboid aquarium
Cuboid 25 times 30 cm. How long does the cuboid's third side contain 30 liters of water? - Sisters
Sisters Hanka and Vera go mostly to their grandmother by bicycle. Journey took Hanka 30 minutes and Vera 20 minutes. How long will Vera catch up with Hanka when she starts from home five minutes later than Hanka? - Unknown integer
Find the smallest integer: Divided by 2, the remainder is 1. divided by 3. The remainder is 2. divided by 4. The remainder is 3. Divided by eight, the remainder is 7. Divided by 9, the remainder is 8. - Parallelogram ABCD
The area of parallelogram ABCD is 906 cm². Points M and N are the midpoints of the sides AB and BC. What is the area of a quadrilateral MBND?
- Hexadecimal number
What will the hexadecimal number 303 be as a decimal number? - Bonbons 2
Kilo sweets will cost 260 CZK. The first type has a price per 320 kg, and the second type is 240 CZK per kg. How many kilos of both kinds of sweets need to prepare a 81 kg mixture? - Circles
The area of a circle inscribed in a square is 7. What is the area of a circle circumscribed around a square? - Freight train
The train carries 525 tons of limestone in 29 wagons. Wagons are 15 tonne and 20 tons. How many are 15 ton, and how many are 20 ton wagons? - Football season
Throughout the football season gave, Adam 23 goals more than Brano and 16 goals less than Karol. Edo gave the six goals more Dušan. Karol gave five more than Edo. Brano and Edo gave together 17 goals. How many goals did you give each boy, and how many goa
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