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:

60	-	94%	=
59	-	92%	=
50	-	24%	=
14	-	19%	=
33	-	54%	=
12	+	52%	=
77	+	56%	=
67	-	81%	=
53	+	16%	=
80	-	76%	=

Percentage in word math problems

• Election mathematics
  In elections, 8 political parties received the following shares of votes: strana A ; 56 % strana B ; 11.9 % strana C ; 11.7 % strana D ; 8.8 % strana E ; 6.3 % strana F ; 5.1 % strana G ; 0.2 % Calculate what share each party would obtain in parliament if
• Sea water
  Seawater contains about 6.5% salt. How many dm³ of distilled water must we pour into 21 dm³ of seawater to get water with 1.2% salt?
• 100 %
  How much is 100% if 82 % is 77?
• Suit
  The suit cost 201 euros. How much cost the pants if it is 40% cheaper than the jacket?
• Ace
  We pulled out one card from a complete set of playing cards (32 cards). What is the probability of pulling the ace?
• Profits
  Two members will make a profit of 52,000 EUR. The first earned 8% more and the second 10% more and thus earned 56,700 EUR together. How much will each initially earn?
• Sugar
  The sugar factory produced 180.6 tons of sugar in 1 day at 14% sugar content. How many tons of pure beet sugar factory processed in 1 day?
• Assistant
  The Assistant rewrote 15% of the entire manuscript in 12 hours. How many hours must he still write to rewrite the rest of the manuscript?
• Big number
  Dagmar typed numbers on the computer (without spaces) 45678910111213141516... Which number did she write in the third place? The digits of this large natural number are assigned natural numbers from four 4-5-6-7-8-9-10-11-12-13-14-15 etc. - without dashes
• Salary increase
  Ms. Merry's salary increased by 15%, which was 83 euros. What should you pay before the increase?
• The deposit
  A deposit of € 2,612.5 was placed for one year at an annual rate of 4.5%. After one year, the amount rose to € 2,612.5. Find the initial deposit.
• Number value
  25% of the number x equals 2^-1. What is the value of x?
• Share price
  The initial share price first fell by 2%, and then this new price rose by 20%. The final share price is CZK 2,400. Calculate the initial share price.
• Salt solution
  How many grams of table salt and water do we weigh to prepare 500 g of a 15% solution?
• Coal mined
  The monthly plan exceeded 17,000 tons of coal at the mine by 12.5%. How many tons of coal did they mine?

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