1. Wire
From wire 53 meters long they cut of 12.1 m and then 13.1 m. How many meters of wire left?
2. Cake fractions
Thomas ate 1/3 of cake, Bohouš of the rest of the cake ate 2/5. What fraction of cake left over for others?
3. Buses
At the bus stop is at 10 o'clock met buses No. 2 and No. 9. Bus number 2 runs at an interval of 4 minutes and the bus number 9 at intervals of 9 minutes. How many times the bus meet to 18:00 local time?
4. Three elephants
Three elephants eat three piles of hay in 150 minutes. For how long does 96 elephants eat  96 stacks of hay?
5. Minutes
Write as fraction in basic form which part of the week is 980 minutes.
6. Wood bars
It is 9 bars 14 meters long and 9 bars 11 meters long. How many 5-meter lath is needed to make them?
7. Strip
From 5.9 cm wide strip should be cut rhombus with area 28 cm2. How long will be its side?
8. Square
Draw a square on the edge of a = 4 cm. Mark the center of symmetry S and all axes of symmetry. How many axes of symmetry does? Write down.
9. Draw it!
Draw two lines c, d that c || d. On line c mark the points A, B. By point A lead perpendicular line to c. By point B lead perpendicular line to c.
10. Television
When we add to the difference between the numbers 1704 and 654 the difference numbers 14920 and 14042, we get a year in which television was invented. How many years people known the TV?
11. Pump
From the pump in the yard dripping water. Every drop is 1 ml. How many drops will be necessary before filling a bucket with a volume of 10 l? Calculate how long it will fulfill the bucket when drops fall each second.
12. Money borrow
Ms. Kate wants to borrow € 2,000. The company A will borrow ten installments of 240 euros and the first two months does not pay anything. Company B it their position in 12 installments of € 210. Which company has the more favorable interest rate for Ms. K
13. Pins
Sarah bought 9 pins, Eva bought 4 pins and saved 2 euros. How many pins buy Dana, when she have 3 euro?
14. Area of square
Calculate the content area of the square whose perimeter is 24 dm.
15. Unknown number 2
I think the number. When he reduces it four times, I'll get 11. What number am I thinking?
16. Class
The class has 18 students. Everyone knows inline skating or skateboarding. Inline skating can ride 11 students on a skateboard 10. How many ride on inline skates and on skateboard?
17. Juice box
In the box is 0.3 liters of juice. How many liters of juice contains 3 these boxes?
18. Time
16.2 days ..... how many hours is it?
19. President
President of Slovakia earns a monthly € 7844 per month. How many times earn than Jimmy's monther salary € 612? 15.3.2014 the presidential election, which decides who will almost effortlessly 5 years to receive such space salary for nothing;)
20. Classroom
In a class are 32 pupils. Boys are 8 less than girls. How many boys and girls are in the classroom?

Do you have an interesting mathematical example that you can't solve it? Enter it, and we can try to solve it.

To this e-mail address, we will reply solution; solved examples are also published here. Please enter e-mail correctly and check whether you don't have a full mailbox.