Expression of a variable from the formula - practice for 11 year olds - page 15 of 16
Number of problems found: 317
- Volume 3261
The volume of the square is 56l. The length is 10 dm, and the width is 2 dm. What is its height? - Securities 3226
After one year, we sold securities issued at an interest rate of 7% for CZK 8,560. What was their original value? - The cube
The cube has a surface area of 486 m². Calculate its volume. - Dimensions 3086
The red cube has an edge 0.2 dm smaller than the blue cube. The surface of the blue cube is 294 cm². What are the dimensions of the cubes?
- Simplify
Simplify the following problem and express it as a decimal: 5.68-[5-(2.69+5.65-3.89) /0.5] - Kilometers 3029
The car consumed m liters of gasoline per s of kilometers. How many liters of gasoline does it consume per 100 km? - Hotel
The hotel has a p floor each floor has i rooms from which the third are single, and the others are double. Find the number of beds in the hotel. - Bus lines
Bus connections are started from the bus stop on its regular circuit: No. 27 bus every 27 minutes and No.18 every half hour. What time start these two bus lines run if the bus stop meets at 10:15 am.? - Circumference 2951
What is the radius of a circle with a circumference of 28 cm?
- Diameter 2949
What is the diameter of a circle with an area of 35 cm square? - Calculate 2946
The block's surface area is 94 cm². The lengths of its two edges are a = 3 cm and b = 5 cm. Calculate the length of its third edge. Let's say: From the formula for the block surface, first calculate c. - Even / odd numbers
a / Using variable n, write two consecutive odd numbers. b / the sum of three consecutive odd numbers is 333. What are these numbers? - Calculate: 2884
Calculate: a / 2 + 3 * 4 - 5 * 4 + 3 b / 2 + 3 * (4 - 5) * (4 + 3) c / 2 + [3 * 4 - (5 * 4 + 3)] d / {2 + [3 * (4 - 5)] * 4} + 3 e / 2 + {3 * [4 - 5 * (4 + 3)]} - Creases 2795
Three punch cuts cost as much as two creases. How much does it cost if five punch cuts cost 2 euros 50 cents?
- Calculate 2782
The school paid CZK 25,400 for five identical boards and two printers for a computer. Calculate how much one board costs if one printer's price is 4500 CZK. - Floor
The rectangular floor of the living room has a length of 5.4 meters and a circumference of 17.2 meters. What is its width? - Fence
The square garden has an area of 537 m². How many meters is netting necessary to fence the garden? - Cube 5
The surface of the cube is 15.36 dm². How will change the surface area of this cube if the length of the edges is reduced by 2 cm? - Third dimension
Calculate the third dimension of the cuboid: a) V = 224 m³, a = 7 m, b = 4 m b) V = 216 dm³, a = 9 dm, c = 4 dm
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