Maths practice for 12-year-olds - page 246 of 347
Number of problems found: 6923
- Speed Conversion Meters Seconds
The car travels at a speed of 20m/s. At what speed does it travel at km/h? - Wind Speed Conversion
When it is said that the wind blows 25 m/s, how much km/h blows? - Students Travel to School
How do pupils travel to school? 2/7 uses a trolley bus, 1/5 drives, and the remaining 136 pupils walk. How many pupils are there at school? - Drawer
The rectangular face of a drawer has a perimeter of 108 cm and a width of 18 cm. Find the length and the area of the rectangular face of the drawer. - Water block
A block with a 50 cm² base is filled with water 5 cm under the edge. How many sugar cubes with a 2 cm edge can be thrown into a container that overflows with water? - Grandfather and grandmother
The old mother is five years younger than the old father. Together, they are 153 years old. How many years has each of them? - Two trains
There were 159 freight wagons at the railway station creating two trains. One had 15 more wagons than the other. How many wagons did each train have? - Electric current calculation
Calculate how much electric current flows through the circuit if a 3 C (C is SI unit - Coulombs) electric charge passes through the conductor cross-section in 30 seconds. - Bulb Current Resistance Calculation
The bulb is connected to a 4.5 V power supply. An electric current of 45 mA flows through the filament of the bulb. The calculated size of the electrical field of the filament lamp - Electrical Voltage Calculation
A resistor with an electrical resistance of 1.5 kiloohms passes through an electrical current of 0.1 amps. Calculate the electrical voltage between the resistor terminals - Coil as a girl
The electrical resistance of the copper wire coil is 2.0 ohms. What current runs through the coil when the voltage between the terminals is 3.0 V? - Coulombs How long does it take for a 15 C charge to cross the conductor's cross-section if a 3 mA current passes through the conductor?
- Resistance of the resistor
The resistor terminals have a voltage of 20 V, and a current of 5 mA is passed through. What is the resistance of the resistor? - Pupil age
I am a primary school pupil, and I spent 1/4 of my age on parents' exercise with children, 1/3 on drawing, and 1/6 on flute. I did not have a ring for the first three years of my life and never went to two rings at once. How old am I? - Dividing - fractions
11/4, what will we divide to get 11/12? - Train and walker
Walker passes an hour 5 km. Express train per hour 100 km. Walker went for 4 hours. How many minutes did the distance express train? - Savings
Eve lent 1/3 of her savings to her brother, 1/2 of her savings spent in the store, and 7 euros left. How much did she save? - Football Goals Home Away
In the 223 matches, the teams scored 1174 goals, of which home teams scored 638. From the duels played so far, the home team won 127 times. How many more goals have the home team scored in the duels played so far compared to the visitors? - Money Spent Earned Fraction
Frank spent 4 sixths of the money he got from his grandmother on a cassette with songs. With the help of a neighbor, he earned 2 sevenths of the amount he received from his grandmother. Express as a fraction what part of the money from his grandmother was - Four-ninths of pupils
Pupils at school choose a circle. A third of them chose athletics, four-ninths of the pupils chose ceramics, and the remaining 12 pupils chose floorball. How many pupils are there in the school? How many signed up for individual circles?
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