Maths practice for 12-year-olds - page 284 of 347
Number of problems found: 6932
- Cow hay
I eat four cows in 5 days and 16 bags of hay. How many bags will five cows eat in 5 days? - Chocolate cost
If we pay 1.40 euros for two chocolates, how much will we pay for five chocolates? - Well digging cost
The width of the well with the masonry should be 1.8 m. How much will digging a well 16 m deep be paid if an average of 800 CZK is paid from meter cubic? - Dog food
The shelter buys a supply of food for 12 dogs for one week. How many days will this supply last if two more dogs are added to the shelter? - Five pumps
Three same pumps fill the tank with 50400 liters of diesel in 7 hours. How many liters of diesel will it take in 4 hours if we add two more of the same pumps and pump them the same way? How much more (or less) will they get if we add 2 of the same pumps a - Fence painting
Mother and Peter can paint the fence around the whole garden in 9 days. If Victor helped them, how many days would it take? - Aquarium depth
The aquarium has the shape of a block with a length of 0.7 m and a width of 25 cm. It can hold 56 liters of water. How deep is the aquarium? - Dried apples
57 kg of 3q red apples is dried. How many dried apples do we get from 60 kg of fresh apples? - Skate savings
Luke was saving for new roller skates. The first month he saved a third of their price, the second month a quarter, the third month half of the rest of the price, and the fourth month €25. How much € did the skates cost? - Bridge building
Ninety-six soldiers will build a pontoon bridge in 5 hours. How long before the same bridge creates 54 soldiers? - Popsicle money
Karel could buy 25 popsicles for 0.69 euros for the money saved. How many comics could you buy with this money if one costs 2.62 euros? - Equation verification
Calculate and verify the correctness of the test result: 12 (3c - 5) + 11 = 10 (8c - 7) - 16c - Rectangle from string
String 12 m. Make a rectangle when one side is two times longer than its width. - Cube walls
The wall of the cube has an area of 8 cm square. How many square cm is the surface of the cube? - Paint cans
The room has 4 m, 5 m, and 2.4 m dimensions. Suppose one can is enough to paint 10 m². How many cans of paint are needed to paint the walls and ceiling of this room? - Sputnik
The first Earth satellite was flying at a speed of 8000 m/s. At that rate, he circled the Earth in 82 minutes. Jet flies at an average speed of 800 km/h. How long would it take to circle the Earth around? - Train speed
The train ran the distance between stations at a speed of 90 km/h for 4 hours. What speed can he drive if, according to the new timetable, the journey takes an hour longer? - Egg cooking
Cooking one egg takes 4 minutes. How many minutes does it take to cook four eggs? - Unit conversion
How to calculate 2/5 m = x dm? - Trip cost
A liter of gasoline costs 1.516 euros. The average consumption of the KOLO car is 6.9 l per hundred kilometers. The car has a 40-liter tank. How much will the car owner pay for the trip from Zilina to Prague and back if he follows the 413km long route?
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