Maths practice for 12-year-olds - page 341 of 362
Number of problems found: 7223
- Map 2
At what scale is a map made if the distance 1.3 km corresponds to the map segment 4 cm long? - Loan
If you take a bank loan of $ 11000 and want to repay it after the year, you must pay the total amount of $ 11242. What is the annual interest rate on this loan? - Football league
The 2nd football league plays each of the 16 participants with each opponent twice. Every victory gets 3 points, 1 point for a draw, a defeat, or none. After the competition, the team had 54 points and 12 defeats at 9th place. How many times has the team - Cone and the ratio
The rotational cone has a height of 43 cm, and the ratio of the base surface to the lateral surface is 5: 7. Calculate the surface of the base and the lateral surface. - Logik game
Letter game Logik is a two-player game that has the following rules: 1. The first player thinks five-letter word in which no letter is not repeated. 2. The second player writes a five-letter word. 3. The first player answers two numbers. The first number - Quadrilateral
In the square ABCD point, P is in the middle of the DC side, and point Q is in the middle of side AD. If the area of quadrilateral BQPC is 76 cm², what is the area of ABCD? - Potatoes
Could 446 tons of potatoes (ρ = 771 kg/m³) fit in a warehouse with a volume of 699 m³?
- Wheel
How many times turns the wheel of a passenger car in one second if the vehicle runs at speed 52 km/h? Wheel diameter is d = 60 cm. - Hiker
The hiker went on half of the trip on the first day, a third of the trip on the second day, and remains 15 km. How long was the trip he planned? - Garden
Father dug up the garden in 19 few hours. Son in 23 hours. How many hours does it take to dig up the garden together? - Inequation
Solve the inequation: 5k - (7k - 1)≤ 2/5. (5-k)-2 - Rotatable tower
The rotatable tower situated in the city center has the ground shape of a regular polygon. If the tower is rotated by 18° around its centerpiece, it looks from the side same. Your task is to calculate at least how many vertices can have a ground plan view - Christmas
Exactly after 114 hours, we sit down at the Christmas Eve table. What day and what time was it when Dad said this sentence? They sit at the Christmas Eve table exactly at the 18-o'clock (6 PM). - Soup
47% of pupils at the school eat in the canteen, 1/47 of students who eat in the canteen eat lunch soup. a) What percentage of pupils who eat in the canteen and eat soup for lunch? b) What percentage of all pupils of school eat lunch soup? - Sales off
Calculate the original price of the good if the price after discount 25% and the subsequent rise of 20% is 400 USD.
- Rounding
The following numbers round to the thousandth: - Decomposition
Make decomposition using prime numbers of number 206. The result is written as prime factors (all, even multiple) - Cars
Cars started at 7:00 AM. From point A, the car runs at 40 km per hour, and from B, the car runs at 70 km per hour. Between A and B is a 250 km long road. When and where will they meet (measured from point A)? - Pigs
Pigs are fed by beet. Beet feed contains 11% dry solids, which is 0.74% of digestible crude protein. How much beet must be consumed in one month (30 days) if the weight of digestible crude protein contained in a daily dose of beet was 0.531 kg? - Playing Cards
Kara has 2 times more cards than Dana. Dana has 4× less than Mary. Together, they have 728 cards. How many cards have each of them?
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