# Math problems

Verbal problems allow you to practice your knowledge of mathematics in problems of everyday life and school problems. Problems train understanding, translation into the mathematical language (eg equations), solve it, check the accuracy and solution discussion.
Choose a topic you want to calculate and improve in.

### From our database of math problems we offer:

• Trickster 2
Figliarko had in wallet a few cents. One friend returned 4 cents and another friedn 7 cents. Now he has 51 cents in the wallet. How many cents previously had in his wallet?
• Fit ball
What is the size of the surface of Gymball (FIT - ball) with a diameter of 65 cm?
• Profitability
The purchase price of goods is 13000, the sales price is the 20000. What is the profitability as a percentage?
• Alice
Alice spent 5/11 of her money on a back pack. She has \$42 dollars left. How much was her back pack?
• Two workers
Two workers should fulfill certain task together for 5 days. If the first worker increased their performance twice and second twice fell, it took them just four days. For how many days would handle the entire task first worker himself?
• Server
Calculate how many average minutes a year is the web server is unavailable, the availability is 99.99%.
• Expression 1
What is 7+8-(5×2)+5-4+(6×(5-3)+6)-(8+10)-7+6?
• Plot
The plot on which Mr. Kalous is to build a house has the shape of a rectangle. On a 1: 500 scale, its dimensions are 7cm and 5.5cm. Find out the dimensions of the plot. Calculate the parcel size.
• Volume and body diagonal
Calculate how much the volume and body diagonal of the cuboid decrease if we reduce each of its three edges a, b, c by 18%?
• Rhombus
One angle of a rhombus is 136° and the shorter diagonal is 8 cm long. Find the length of the longer diagonal and the side of the rhombus.
• Decide
The rectangle is divided into seven fields. On each box is to write just one of the numbers 1, 2 and 3. Mirek argue that it can be done so that the sum of the two numbers written next to each other was always different. Zuzana (Susan) instead argue that.
• Bank
Paul put 10000 in the bank for 6 years. Calculate how much you will have in the bank if he not pick earned interest or change deposit conditions. The annual interest rate is 3.5%, and the tax on interest is 10%.
• Quarter circular
The wire that is hooked around the perimeter of quarter-circular arc has length 3π+12. Determine the radius of circle arc.
• Geometric seq
Find the third member of geometric progression if a1 + a2 = 36 and a1 + a3 = 90. Calculate its quotient.
• BMI index
Calculate BMI (body mass index, an index indicating obesity, overweight, normal weight, underweight) man weighing m = 71 kg and height h = 170 cm. Index is calculated according to equation (formula): ? With BMI index is possible to compare people of diff
• Prices prices
The meter of the textille was reduced by CZK 42, so 4 meters of the new price was 20 CZK cheaper than 3 meters of the original price. What was the original and new price of the textille?
• Average
What is the average speed of the car, where half of the distance covered passed at speed 66 km/h and the other half at 86 km/h.
• Goat
Meadow is a circle with radius r = 19 m. How long must a rope to tie a goat to the pin on the perimeter of the meadow to allow goat eat half of meadow?
• Three painters
The three painters have painted bridge. The first would work done in 5 days, the second in 6 days, and the third in 7.5 days. How long will the bridge work if they work together?