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:

10%	of	90	=
60%	of	45	=
50%	of	56	=
50%	of	54	=
40%	of	80	=
80%	of	30	=
50%	of	18	=
50%	of	14	=
50%	of	24	=
40%	of	95	=

Percentage in word math problems

• 3y inflation
  The price of the cookie rise in the first year by 2%, the second year fell by 6%, and in the third year increased by 17%. Calculate the average annual increase in the price of the cookie.
• Divisibility
  Determine all divisors of a number 91.
• Hop-garden
  The length of the rectangular hop garden Mr. Smith increased by 25% and its width by 25%. What is the percentage change in the area of the hop garden?
• Parking
  At a building parking, 245 spaces are for cars, 56 are for vans, and the rest are for buses. If 14% of all parking spaces are for buses, how many parking spaces are there in the building? How many spaces are for buses?
• Concentration
  We want to dilute 0.5 litres of 8% vinegar to a concentration of 0.20%. How many litres of water must we add?
• Siblings probability
  The table contains information on the number of pupils according to the number of siblings: Number of siblings 0 1 2 3 and more Number of pupils 50 50 72 28 What is the probability that a randomly selected student has exactly two siblings?
• Sweater discount
  The sweater was reinforced from 850kc to 340kc. How many percents were merged?
• One percent
  One percent of all the lights in the city are LED, and the remaining 99% are conventional. Other types are not there. John counted them honestly, but he had counted only conventional. After a good dinner, he registered numbers, and he gave notice that fro
• Tracksuit savings
  The tracksuit became cheaper by 15% later on sale and later by 10%. How many euros did Jane save if she bought this set after the second discount and paid € 45.9?
• Cube Edge from Volume
  Find the length of the cube's edge and its volume is equal to 60% of the volume of a block measuring 7 cm, 8 cm, and 6 cm.
• Utopia Island
  The probability of disease A on the island of Utopia is 40%. The probability of occurrence among the men of this island, which make up 60% of all the population (the rest are women), is 50%. What is the probability of occurrence of A disease among women o
• Clothing company
  A clothing company manufactures three kinds of coats. The weekly production is 400 of the first type, 370 of the second, and 230 of the third type. By long-term observation it was found that among the quality coats there are 2/3 of the first type, 7/9 of
• Helmet
  Nowadays, better results can be obtained in cycling due to the rider's physical preparation and updated technologies. One of the essential parts of the rider's equipment is their helmet. While most bikers wear a helmet mainly to protect themselves, racers
• Mushrooms
  Mushrooms lose 90% by weight drying. How many fresh mushrooms are needed for 5 kg of dried mushrooms?
• Red diplomas
  The number of students with honors in 2013 and 2014 is in a ratio of 40:49. How big is the year-on-year percentage increase?

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