Math word problems

From our database of math word problems and examples we offer:

• Class 8.A
  Three quarters of class 8.A went skiing. Of those who remained at home one third was ill and the remaining six were on math olympic. How many students have class 8.A?
• Tree shadow 3
  What is the diameter of a tree around which is 3m 9dm 7cm long rope wrapped? How big is its cross-sectional area?
• OPT
  What is the perimeter of a right triangle with the legs 14 cm and 21 cm long?
• Pooja
  Pooja and Deepa age is 4:5, 4 years back it was 8:11. What is the age of Pooja now?
• Seawater
  Seawater has a density of 1025 kg/m³, ice 920 kg/m³. 8 liters of seawater froze and created a cube. Calculate the size of the cube edge.
• Ruler
  How far from Peter stands 2m hight John? Petr is looking to John over ruler that keeps at arm's distant 60 cm from the eye and on the ruler John measured the height of 15 mm.
• Expression 1
  What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6?
• Parallelogram
  Calculate the area and perimeter of a parallelogram whose two sides are long a=24 cm b=22 cm and height h_a = 6 cm long.
• Water temperatures
  To 25 liters of water at 50 °C we add 15 liters of water at a different temperature. How many °C should the water be colder than 50 °C so that 40 liters of the water obtained has a temperature 42.5 °C?
• Density - simple example
  Material of density of 532 kg/m³ occupies a container volume of 79 cm³. What is its mass?
• Average
  The arithmetic mean of the two numbers is 71.7. One number is 5. Calculate the second number.
• Horizon
  The top of a lighthouse is 19 m above the sea. How far away is an object which is just “on the horizon”? [Assume the earth is a sphere of radius 6378.1 km.]
• Tickets 3
  A total of 645 tickets were sold for the school play. They were either adult tickets or student tickets. There were 55 fewer student tickets sold than adult tickets. How many adult tickets were sold?
• Milimeters
  How many millimeters is 1/4 meters?
• Legs
  Cancer has 5 pairs of legs. The insect has 6 legs. 60 animals have a total of 500 legs. How much more are cancers than insects?
• Trapezium 2
  Trapezium has an area of 24 square cms. How many different trapeziums can be formed ?
• Unknown number 24
  I think the number: a - is the same as the square area that has the 12th circumfence. What is this number? b - its half is 7 times bigger than its quarter. Is this the number?