Maths practice for 12-year-olds - page 244 of 347
Number of problems found: 6923
- Necklace cost
For the opening ball of the season, the president's wife bought a necklace with a bracelet for 768 euros. How much did the necklace cost, and how much did the bracelet cost if the bracelet was 40% off a) cheaper, b) more expensive than the necklace? - Profit per kilo
The trader sells apples at a profit of 20% per kilogram. Today, he decided to reduce the price of apples by 10%. How much profit does the trader have today? - Expected Application Count
2600 pupils applied for admission interviews, which was 130% of the expected number. How many applications were expected? - Isosceles from square
How many isosceles triangles form in a square when we mark all diagonals? - Wheat harvest
One combine harvester harvests a wheat field in 12 hours, and another combine harvester in 16 hours. How long does the same field harvest the third combine harvester alone if all three harvesters harvest the wheat field in 2 hours? - Finding Unknown Number LCM
I reduced the unknown number by five and multiplied the result difference by three. Finally, I increase the resulting product by six and get the least common multiple of the numbers 3 and 8. Calculate the unknown number. - Clock Hand Tip Path
The tower clock has a small hand 1 m long. What path will the tip of the little hand describe in 1 day? - Race Length from Fraction
Cyclists ran 3/7 of the total length during the race and had 80.5 km to finish. How long is the race? - Orchard
Three-fifths of the orchard are apple trees, and one-third of the trees are cherries. The remaining five trees are pears. How many trees are in the orchard? - Garden hose water
The garden hose flows 21 1/2 liters of water in one minute. How many liters of water are used for water in 8 1/2 minutes? - Milk
At the kindergarten, every child got 1/5 liter of milk in the morning and another 1/8 liter of milk in the afternoon. How many liters were consumed per day by 20 children? - Picture Frame Length Increase
In what proportion do we need to increase the length of the picture frame if its original length is 55 cm and 30 cm larger? - Wheel Rotations at Speed
The diameter of the wheel is 56 cm. How many times does it turn in 5 minutes if traveling at 60 km/h? - Railroad
The railroad runs parallel to the railway. The train travels at 36 km/h on track. In the opposite direction, the motorcycle rides at 90 km/h. The train passes in 3 seconds. How long is a train? - Mineral Water Left
Anka bought one whole 5 liters of mineral water for trip one and drank three-fifths of it. How many liters of mineral water are left? - Natural gas in kWh
Gas consumption for 2017 was 11,301 kWh I paid 532 € How much is 1 m³? - Three Groups Work Shifts
A group of fitters installed the cable line in 9 changes, and the second group completed the same task in 1/3 less time. How many shifts would the third group do the same work if, with all three groups working together, the assembly took 2 shifts? - How many
How many double-digit numbers greater than 30 can we create from digits 0, 1, 2, 3, 4, and 5? We cannot repeat numbers in a two-digit number. - Trees The total number of trees in the orchard is two-fifths of pearls and apples are three eighty. The rest of the trees are nine ceremonial. How many trees are in the set?
- Goods Weight Total Tons
A crane loads goods onto the wagons of a freight train. Goods of the first type weigh two and three-quarter tons, goods of the second type two and a quarter tons, goods of the third type one and a half tons, goods of the fourth type three-quarters of a to
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