Math practice for 13 year olds - page 116 of 423
Number of problems found: 8457
- Quadrilateral 66614
The picture shows a square ABCD with the center S and the side 8 cm long. Point E is any point on the CD side other than C and D. Calculate the area of the ASBE quadrilateral in cm². - Hexagonal wax
The candle is made from wax in the shape of a regular hexagonal pyramid. It has a height of 6.5 cm and a length of the base edge of 3 cm. Find the volume of wax. - Percentage 66564
There are 584 students at the school, 421 of them boys. What percentage of students are girls? - O'clock 66554
What is the angle of the hour and minute hands on the clock of the old tower if it is exactly eight o'clock? - Conditions 66544
I have a box that contains white, milk, and dark chocolate candies. The ratio of white to milk candies is 3:4. The ratio of white to dark candies is 4:3. The least amount of candies in the box if the conditions of the ratio of candies are met. - Concentrate - juice
To produce one liter of 100% juice, 2 kg of fruit are needed. Juice is made by squeezing the fruit into a pulp, drying it, and obtaining a concentrate, which is then transported to the processing site where it is diluted again. How many liters of fruit ju - 15-kilogram 66524
The lift has a load capacity of 250 kg. How many 15-kilogram boxes can a person weighing 80 kg maximally take? - Prepared 66494
Benches were prepared around the fire. When seven tourists sit on them, one tourist will sit alone on the last bench. When six of them all sat down, one had to stand. How many tourists were at the campfire if we know there were less than 100, and how many - Coordinates 66474
Draw a trapezoid in the coordinate system with bases 4cm long, 2cm long, and 3cm high. Please write down the coordinates of its vertices. - Performance 66404
A person weighing 50 kg can climb 15 stairs. One step is 18 cm high. Determine a person's performance when: a) slowly climbing the stairs if it took him 13 seconds b) going down the stairs slowly if it took him 10 seconds c) quickly climbing the stairs if - Right-angled 66364
From a rectangular board with 2 m and 3 m dimensions, we cut isosceles and right-angled triangles at the corners with an overhang of 40 cm. Calculate the ratio of the rest of the board's areas to its total original area. - Deciliters 66324
We placed the largest possible lead cylinder in a 1-liter cube container. How many deciliters of water will now fit in the container? - Deposited 66314
Mr. Adam and Mr. Milan each deposited 20,000 euros in their bank. After the first year, Mr. Adam added 600 euros and Mr. Milan 550 euros. What was the interest rate of each bank? - Interest 66304
How big would the Novak family take out a housing loan if they paid an interest of 5500 euros after the first year and the interest rate of this loan was 5.5% p. and.? - Quadrilateral prism
Calculate the surface and volume of a quadrilateral prism if given: the area of the base is 40 cm square, the bottom of the base is k = 8 cm, and the height of the prism is 1.3 dm (the bottom is a rectangle) - Enlarge 66284
We will enlarge the line 8 cm long in the ratio of 7:4. How long in centimeters will the new line be? - Calculate 66254
Calculate the volume and surface of a regular hexagonal prism with a height v = 2cm and a base edge a = 8cm. - Sandwiches
In a cafeteria, 1/6 of the students eat salads, and 2/3 eat sandwiches. There are 18 students in the cafeteria. How many students are eating lunches other than salads or sandwiches? - Substitution 66204
Specify the value of the expression, (3x-5) / (2x + 1) if x equals the value that will be in the reader after substitution. - Flowing 66174
How long in an hour will a 30m, 15m, and 2m pool be filled with water flowing at 900l / min if it is 90% full?
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