Maths practice for 12-year-olds - page 231 of 347
Number of problems found: 6932
- Solve Two Linear Equations
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. - Picture Frame Perimeter
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 - Equation with Fractions Solve the equation with fractions: x / 3-x / 8 = x / 12 + x / 8
- Surface of Quadrilateral Prism
Calculate the surface of a quadrilateral prism two dm high, the base of which is a square with a side of 15 cm. - Square Rolling Line Turns
The square has a side x cm long. How often does it "turn" when we roll it along a line d cm long? - A man
A man spends 5/9 of his money on rent and 5/16 of the remainder on electricity. If the final balance remaining is 550, find how much was spent on rent. - Fish Drink Price Problem
Five boxes of fish and three bottles of drink cost 276 CZK, three boxes of fish and two bottles of drink cost 176 CZK, and two boxes of fish and one drink bottle cost 176 CZK. Thus, we pay 276 CZK for two boxes of fish and one drink bottle. - Remaining
Aladár promised his mother that he would wash the dishes. To avoid getting too tired, he divided the work into four stages. First, he washed one quarter of all the plates. After a short rest, he washed one sixth of all the plates. After a long rest, he wa - Base of house
Calculate the volume of the bases of a square house. If the base depth is 1.2 m, the width is 40 cm, and the outer circumference is 40.7 m. - Wine Sugar Content Cubes
A bottle of red semi-sweet wine with a volume of 0.75L has a sugar content of 18-45g/dm³. How much is it in terms of sugar cubes? - Clothes
Dana and Jane collect clothes. Dana had nine more items than Jane, so she gave Jane 7. Who now has more clothes, and by how many? - Turtle Daughter Age Difference
Turtle Dorota is 158 years old, and her daughter Dorotka is 71 years old. How many years ago was Dorota 30 times older than her daughter? - Inscribed
The cube is inscribed in the cube. Determine its volume if the edge of the cube is 10 cm long. - Metal rails
Dad needs to improve the edges of the wooden boxes, which are to be reinforced with metal rails. How many cm of rails will he need if the box has the shape of a prism and the length of the edges is 70 cm, 70 cm, and 120 cm? - Scale of plan
On the village plan on the scale of 1:1000, a rectangular garden is drawn. Its dimensions on the plan are 25 mm and 28 mm. Determine the area of the garden in ares.
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