# Examples for 7th grade (seventh)

#### Number of examples found: 1974

• Circle r,D Calculate the diameter and radius of the circle if it has length 26.59 cm.
• Decomposition Make decomposition using prime numbers of number 155. Result write as prime factors (all, even multiple)
• Beer Which beer is better to drink: small beer (0.3 L) for 0.67 € or large (0.5 L) for 1.81 €?
• Divide 5 Divide 288 in the following ratio 3 : 4 : 5
• Pound2kilos How many pounds make 1 kilograms?
• Rhombus 29 One of the diagonals of a rhombus is equal to a side of the rhombus. Find the angles of the rhombus.
• Trapezium 2 Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
• Reservoir 6 m long reservoir has a diameter of 2.2 m. What is its surface area in square meters?
• Common divisors Find all common divisors of numbers 30 and 45.
• Counting number What is the smallest counting number divisible by 2,5,7,8 and 15?
• Tank How many minutes does it take to fill the tank to 25 cubic meters of water filled 150hl per hour?
• Rape The agricultural cooperative harvested 525 ares of rape, of which received 5.6 tons of rape seeds. Calculate the yield per hectare of rape.
• Potatoes Potatoes contain 78.6% starch. How many potatoes need to obtain 27 kg of starch?
• Unknown number I think the number. I'll reduce it to its one-third. The result is then increased by one-third, and I get the number 12.
• Distance of numbers Which number has the same distance from the numbers -5.65 and 7.25 on the numerical axis?
• Playground Fencing square playground cost € 464; 1 meter cost € 19. What is the area of the playground?
• Geometric plan At what scale the building plan if one side of the building is 45m long and 12mm long on a plan?
• Circle simple Circumference of a circle is 6.28. What is the area of the circle?
• Clocks How long track travel the second hand in 46 hours, the end of which is 4 cm long. Determine the radius of the circle, if its perimeter and area is the same number.