Maths practice for 12-year-olds - page 240 of 347
Number of problems found: 6923
- Clock Delays Time Shown
The tower clock delays only 55 minutes in an hour. It's noon, and the clock shows the exact time. What time will they show up after four hours? - Paying with Banknotes
The customer paid the amount of CZK 3,200 with the same 100-crown, two-crown and five-crown banknotes. How many banknotes did he use to pay the amount if he paid precisely the amount? - Four Even Numbers Sum
The sum of four consecutive even numbers is equal to 108. Which of the numbers is equal to the smallest of these summands? - Small Cubes Large Cube
The largest number of small cubes with an edge length of 2 cm will fit in a large cube with a volume of 216 cm³. - Cuboid
The sum of the lengths of the three edges of the cuboid that originate from one vertex is 210 cm. The edge length ratio is 7:5:3. Calculate the length of the edges. - Playing
How long have we trained on the pitch when we know that the warm-up took 10 minutes, we trained passes for one-third of the time, and we played football half the time? - A number
A number increased by 7.9 is 8.3 - Clock Hand Angle
What is the angle of the big hand of the watch in 20 minutes? - Electricity Consumption Reduction
In two months, the Novák family consumed 624 kWh of electricity during the day and 3018 kWh at night. How much kWh of electricity will the Novák family consume now in two months at the daily rate, and how much at the night rate if they decide to reduce co - Cyclist time
A car traveling at 75 km/h will drive from place A to place B in 3/4 hours. How long does it take for a cyclist to get there at a speed of 25 km/h? - Difference heights
Determine the difference between the altitudes of the Sněžka peak (1,602 m above sea level) and the level of the Dead Sea (-394 m above sea level). - Sugar Consumption Reduction Ratio
The Novak family had an annual sugar consumption of 68.4 kg and decided to reduce it by 5:8 the following year. How much sugar can the Novak family consume in the next year? - Line segment
The 4 cm long line segment is enlarged in the ratio of 5/2. How many centimeters will the new line segment be long? - Electric energy
There are 875 identical light bulbs in the sports hall lighting for 2 hours. How long does the same amount of electricity consume 100 such bulbs? - Finding Original Number
If we reduce the number x by 30%, we get 140. What is x? - Football Field Width
The football field has an area of 75.75a. What is the width if its length is 101 m? - Temperature Drop Degrees
At the Štrbské prom, the station measured an air temperature of 12.7°C in the afternoon. By morning, the air temperature had dropped to -5.8°C. How many degrees °C has the air temperature dropped? - Paper kite purchase
The children will make paper kites in the club. They have calculated that they will need 12 square meters of paper in the store. They have a 125 cm wide bundle of paper. How many meters of the bundle do they need to buy? - Cyclist meeting Trenčín is 120 km from Bratislava. The average speed of a cyclist traveling from Trenčín towards Bratislava is 20 km/h. Calculate the average speed of the passenger car that left Bratislava compared to the cyclist if the cyclist and the passenger car left
- Borrowing Rate of Berries
At what rate did the sparrow borrow 1,200 grape berries from the thrush when it returned 1,392 berries?
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