Maths practice for 12-year-olds - page 272 of 303
Examples and word math problems for 7th grade.Number of problems found: 6056
- Lawns
Before a sports hall are two equally large rectangular lawns measuring 40 m and 12 m. Maintenance of a 10m² lawn costs 45 CZK yearly. On each lawn is a circular flowerbed with a diameter of 8 meters. How much money is needed each year to take on lawn care - Water tank
The water tank shape of the cuboid has dimensions of the bottom 7.5 meters and 3 meters. How high will reach the water in the tank will flow 10 liters of water per second, and will the inflow be open for 5/6 hours? (Calculate to one decimal place, and the - Runners
Thirty chocolates are prepared and distributed in the ratio of 3:2:1 for three runners (in first to third place). How much chocolate will get everyone? - Pumps
Six pump fills the tank for three and a half days. How long will fill the tank with seven equally powerful pumps?
- Apples
Mr. Vesely gives the market his own 48 kg of apples, 40 kg from Mr. Kovar, and 72 kg from Mr. Novak. They earned a total of 1,920 CZK. How must we divide income money for apples? - The exhibition
The teacher charged 280 CZK for four students' admission to the exhibition. How many students were at the exhibition? Hint: the admission cost is a whole number. - Lesson exercising
In the lesson on physical education, pupils are first divided into three groups so that each has the same number. They redistributed, but into six groups. And again, it was the same number of children in each group. Finally, they were divided into nine eq - Rabbit family
The rabbit family ate 32 pieces of carrots. The small one ate six pieces, and the dad five more than the mother. How many pieces did Mom eat? - Area of the cone
Calculate the surface area of the cone. You know the base diameter is 25 cm, and the height is 40 cm.
- Wood
Wood density is 0.6 g/cm³. How many kilograms weigh one m³ of wood? - Chord distance
The circle k (S, 6 cm) calculates the chord distance from the center circle S when the chord length is t = 10 cm. - Angles in triangle
Calculate the angle alpha in the triangle if the beta is 61 degrees and 98 gamma degrees. - Internal and external angles
Calculate a triangle's remaining internal and external angles if you know the internal angle γ (gamma) = 34 degrees and one exterior angle is 78 degrees and 40 '. Determine what kind of triangle it is from the size of its angles. - Circle - easy 2
The circle has a radius of 6 cm. Calculate its diameter, perimeter, and area:
- Draw a trapezoid
Draw a trapezoid if given a = 7 cm, b = 4 cm, c = 3.5 cm, diagonal AC = 5cm. Solve as a construction task. - Circle - simple
Calculate the area of a circle in dm² if its circumference is 31.4 cm. - Circle from string
Martin has a long 628 mm string. He makes a circle from it. Calculate the radius of the circle. - Colour - billboard
Shelftalker has the shape of a parallelogram. Its length is 4.9 m, and its corresponding height is 3.5 meters. Calculate how much (kg) paint must be purchased for redecoration if 1 kg covers 4 m² of shelf talker surface. - Office rent
1 m² of office space is paid €165 per year for rent. How much is the annual rent for an office as big as a football field with dimensions 71.5 m and 102.5 m?
The rhombus area is 13 cm², and its height is 5cm long. Find the perimeter of this rhombus.Do you have homework that you need help solving? Ask a question, and we will try to solve it. Solving math problems.
