Percent practice

Percentage is a way of expressing a number, especially a ratio, as a fraction of 100. See also our verbal problems in percent or
examples1, examples2, examples3, examples4, examples5.

Calculate:

The number of examples:
Range of values:
Complexity:

50%	of	12	=
70%	of	90	=
60%	of	80	=
40%	of	70	=
90%	of	70	=
50%	of	36	=
50%	of	52	=
20%	of	10	=
40%	of	30	=
90%	of	90	=

Percentage in word math problems

• Event probability
  The probability of event N in 5 independent experiments is 0.4. What is the probability that the event N occurs in one experiment (chance is the same)?
• Date game
  Let now is Tuesday. What day is after 229 days? Write the result as a number: 1=Monday, 2=Tuesday, 3=Wednesday, 4=Thursday, 5=Friday, 6=Saturday, 7=Sunday.
• Work
  Workers work five days a week and have 28 days of vacation a year. Calculate how many days is out of work and express it as a percentage. Consider that a year has 52 weeks.
• Vinegar 2
  If we mix 3.5 liters of 5.8 % vinegar with 5 liters of 7.6 % vinegar, how many percentages of vinegar solution will we get?
• The population 3
  The population of the town is 126800. It increases by 15% in the first year and decreases by 20% in the second year. What is the population of the town at the end of 2nd year?
• Mushrooms
  Fresh mushrooms contain 94% water and dried 9%. How many kilograms of fresh mushrooms are needed to collect to get 10 kg dried?
• Tower
  The roof of the tower is a regular hexagonal pyramid with a base edge 5.7 meters long and a height 7 meters. How many m² of the sheet is required to cover the top of the tower? We must add 4% of metal for waste.
• Railway
  The railway line climbs 8 per mille between points A and B, whose horizontal distance is 1.5 km. It climbs 14 per mille between points B and C, which have a horizontal distance of 900 m. Calculate the differences in altitudes between points A and C.
• Reduce of the volume
  Calculate how many % reduce the volume of the cube is reduced the length of each edge by 10%.
• Money distribution
  Peter and George received a total of 200 euros. George received 75% of the amount. Determine how much each of them received.
• Passbook amount
  Mathias had a certain amount of money in the winning book. He won, and his stake increased by 100%. Mathias used half the money for a trip and donated what he won to his brother Jacob. How much is left in his passbook?
• Tank
  1080 hectoliters of water were flowed into a cuboid tank whose bottom dimensions are 9 m and 15 m. This filled 40% of the tank's volume. Calculate the tank's depth.
• Laptop discount
  The laptop was discounted by x euros. After a 15% reduction, it cost 595 euros. How many euros did the laptop cost before?
• Number value
  25% of the number x equals 2^-1. What is the value of x?
• Sales off
  The shoe cost x euros. First, they are discounted by 50%, then 25% of the new amount. Determine what percentage of the total cost is cheaper.

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