Maths practice for 12-year-olds - page 106 of 355
Number of problems found: 7085
- Plate grid box
We must draw a square grid on a rectangular plate measuring 154 cm and 210 cm. What should be the side length of the largest possible box? How many fields will be on the board? - Scout brigade total
A group of scouts works in the woods. A third of them cleaned the stream. A quarter collected timber, and the remaining ten planted trees. How many scouts were on the brigade? - Coal dome days
There are 12,000 tons of coal on the first dome and 2,200 tons on the second. They take 80 tons from the first kick every day and 60 tons from the second. How many days will the same amount of coal be on both kicks? - Linden shadow height
The length of the linden shadow is 429 cm. The length of the shadow meter is 78cm. Calculate the height of the linden. - Trash volume estimate
In physics class, students estimated the volume of the trash can in the classroom. There is a record of the answers of 20 pupils on the board. The actual volume of this dustbin was 12 liters. By how many liters does the average student estimate differ fro - Trapezoid triangle area
In the triangle, ABC, X, and Y are the centers of the sides BC and CA, respectively. The ABXY trapezoid has an area of 12. Calculate the area of triangle ABC. - Unary operators
Calculate: --- (- 5) + (- (- 3)). - Machine product hours
The machine will produce 5,600 products in 7 hours. How many products will they make in 8 hours? - Bathtub
There were 6 gallons of water in Mia's bathtub. Then, 0.1 gallons drained out. How much water is left in the bathtub? - Dining room lineup
If the boys let the two girls in front of them, how many different ways can Anka, Betka, Cyril, Daniel, and Erik line up in the dining room? - Two-digit number creation
How many natural two-digit numbers can we form from the digits 0, 1, 2, and 3 if the numerals cannot be repeated in these numbers? - Douglas HS
Douglas High School is holding a fundraiser and plans to use 2/3 of the money collected to build a new library. Of the money directed towards building the new library, 1/5 will purchase computers. What fraction of the money raised will go towards purchasi - Hector
Hector has 3/4 hours to spend completing his homework. He wants to spend 1/3 of his time on math homework, 10 minutes on reading homework, and the remaining time on science homework. How much time, in minutes, does he have to spend on his SCIENCE homework - Sum or difference
Illustrate the sum or difference of the following expressions 1. 4/8+1/2= 2. 5/6-1/4= 3. 4-3/6= 4. 3/4+1/3= 5. 9/10-2/5= - Number rounding difference
By rounding the number X = 47,546 to thousands, we get the number of hundreds and the number Y. Calculate X-Y. - Illustrate Illustrate the following expressions, then solve. 1. 3-8/10= 2. 4-2/5= 3. 2-3/8= 4. 3-3/7= 5. 5-4/9=
- Cube face coloring
We painted a wooden cube with an edge 4 cm long with green paint over the entire surface. Then we cut it into small cubes with an edge length of 1 cm. The number of cubes that have precisely two faces colored green is: - Clock strike duration The wall clock strikes every full hour, as many strikes as there are hours. The pauses between punches last as long as the punches themselves. At 6:00, exactly 22 seconds passed from the beginning of the first stroke to the end of the last stroke. How lon
- Three-digit number How many three-digit natural numbers can we form from the digits 0, 1, and 2 if the numerals can be repeated in these numbers?
- Cube edges length
If we reduce the length of the cube edge by 30%, this reduced cube has an area of 1176 cm². Specify the edge length and volume of the original cube.
Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
