Maths practice for 12-year-olds - page 230 of 348
Number of problems found: 6953
- Multiple 6577
Father gave Lucia €20 for a new curtain. Due to the pleating, the curtains are wider than the window width of 2 meters. Lucie spent all her money on the curtain, which cost 7.90 Euros per meter. Is the curtain a multiple of the width of the window? - CZ flag
What percentage of the Czech flag comprises blue, white, and red textiles? - The volume
The volume of a solid cylinder is 260 cm³. The cylinder is melted down into a cuboid whose base is a square of 5cm. Calculate the cuboid's height and surface area. - Book reading
If we read the book at a speed of 15 pages a day, we read it three days before we read it at a speed of 10 pages per day. If I read six pages per day, how many days will I read the book? - Customary length
Convert length 65yd 2 ft to ft - Triangular prism
Calculate the volume of a triangular prism 10 cm high, the base of which is an equilateral triangle with dimensions a = 5 cm and height va = 4,3 cm - Barrels
Peter has 42 barrels. One-sixth of them are filled with lemonade, one-third are filled with wine, and half are empty. Calculate how many barrels are with each filling. - Percent 6567
Jana spent CZK 366 on books, which was 75 percent of her savings. How much CZK did Jana have saved? - [square] 6565
How many tiles with a side length of 20 cm will cover a square with a capacity of 1 m² [square]? - Equations: 6562
Solve the equations: (3n-3) / 3 = (9 + 2n) / 2 2x / 4 - 3 = 1 / 2x + 1 - Quadrangle prism Find the volume of a quadrangle prism high 2 dm whose base is a square with a side of 15 cm.
- Circumference 6555
The square picture has a circumference of 28 dm, and its frame is 7 cm wide. What is the outer circumference of the frame? - The tank
The tank is full up to 4/5 of the total height and contains 240 hl of water. The area of the base is 6 square meters. What is the height of the tank? - The aquarium
The aquarium is 120 cm long, 70 cm wide, and 96 cm high. How high does the water reach if we fill it with 168 liters? - Public transport
Determine how many minutes it took each public transport vehicle to travel along its route. The bus set off on its route at 9:47. , it reached its destination at 10:35. The trolleybus set off on its route at 9:38. , it reached its destination at 10:20. Th - Reducing scale
I am sizing some landscaping, and I measured everything on a 20 to 1 scale. I realized when I was done that it was at 30 to 1. How can I convert what I already have to 30 to 1. For example, if the grass area is 22,871.6' at 20 to 1, how do you figure it o - Fractions: 6543 Solve the equation with fractions: x / 3-x / 8 = x / 12 + x / 8
- Quadrilateral 6542
Calculate the surface of a quadrilateral prism two dm high, the base of which is a square with a side of 15cm. - Square 6530
The square has a side x cm long. How often does it "turn" when we roll it along a line d cm long? - One-third 6529
The worm Oliver Zoubek decided to bite through the oak log. In the first year, he made a hole in one-third. The second year, he chewed through one-third of the rest. In the third year, again, a third of the rest, and in the fourth year, he had 16 cm left.
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