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:

55	-	80%	=
95	-	40%	=
34	-	50%	=
68	+	50%	=
85	-	60%	=
70	-	70%	=
90	-	60%	=
60	-	50%	=
65	-	80%	=
80	-	90%	=

Percentage in word math problems

• Stamps collection
  Together, Peter and Jan had 52,000 stamps in their collection. To compete with their friend, they must have 56700 stamps. They agreed that Peter would increase his collection by 8 percent and Jan would give 10 percent more than he has. How many stamps did
• Dice
  How many times must you throw the dice, and was the probability of throwing at least one pětky greater than 70%?
• 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
• Rectangles
  How many rectangles with an area of 8855 cm² have sides that are natural numbers?
• 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?
• Discount
  A ladies' sweater was discounted twice: first by 8%, then by 8% of the new price. Its final price was 66 €. Determine the original price of the sweater.
• 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?
• Double percent
  What is 60% of 30% of 8300?
• Hot air balloon
  A hot air balloon ascends 25 meters for a minute after launch. Every minute, it ascends 75 percent of the height it climbed in the previous minute. a) How many meters will ascend six minutes after takeoff? b) What is the overall height of the 10 minutes a
• Manager gold
  I paid 40% of my salary for gold dental floss, that is, twice as much as for fine catering. Hawaiian shirts cost me 1/6 and 10 percent of my salary went to jet fuel. I still have 400 euros left for coffee. How much did I earn as a manager?
• 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?
• Yogurt Price Sales Change
  The price of yogurt increased by 20%, and the number of yogurts sold fell by 10%. How have yogurt sales changed?

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