# Examples for 5th grade (the fifth graders) - page 17

1. Equation algebraogram Solve the equation: oco + ivo = cita How much has the task of solutions?
2. Zahrada Zahrada má rozměry 5m a 400cm. Kolik pletiva třeba na oplocení pozemku?
3. Wine A bottle of wine costs 21 euros; and wine is 20 times more expensive than a bottle. How much a bottle cost?
4. Identity 123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
5. Unknown number 24 I think the number: a - is the same as the square area that has the 12th circumfence. What is this number? b - its half is 7 times bigger than its quarter. Is this the number?
6. Blackberries Damián gathered for 19 days 9.5 kg of blackberries. Milada gathered for two days 1.6 kg of currants. How much would collect Damián blackberries per day and how much currants Miladka per day?
7. Benches The park has 64 benches. Occupied are by 18 more than empty. How many benches are occupied and empty ?
8. Unknown number 16 My number's tens is three times more then ones My number's ones is twice the number of thousands and my number's hundreds is half the number of of tens. I have two ones. which number am I?
9. Ten fractions Write ten fractions between 1/3 and 2/3
10. Chocolate Children break chocolate first to third and then every part of another half. What kind got each child? Draw a picture. What part would have received if each piece have halved?
11. Rolls Mom bought 13 rolls. Dad ate 3.5 rolls. How many rolls left when Peter yet put two at dinner?
12. Cuboid box Cuboid box have dimensions of 30 cm, 25 cm and 40 cm. Sketch its network and compute surface area of box.
13. Division Which number in division 16 give 12 and the rest 3?
14. Waste paper Our school attend 1,300 pupils. Each pupil collected plastic bottles or paper. Plastic bottles have collected 930 pupils and 600 pupils old paper. How many students have collected together plastic bottles and waste paper?
15. Tulips and daffodils Farm cultivated tulips and 211 units on 50 units more daffodils. How many spring flowers grown together?
16. Goat, cabbage and wolf A man once had to travel with a wolf, a goat and a cabbage. He had to take good care of them, since the wolf would like to taste a.piece of goat if he would get the chance, while the goat appeared to long for a tasty cabbage. After some traveling, he sudde
17. Rhombus sides find the sides of a rhombus, it area is 550 cm square and altitude is 55cm
18. Expressions Find out value of expressions if a = -1, b =2: x=b - 2a - ab y=a3 - b2 - 2ab z=a2 b3 - a3 b2 w=a + b + a3 - b2
19. Cords joining Mum needs 6 cords long 360cm long. How many does she need when they are sold at 9 meters and does not want to join it up?
20. Shoes 4 Belinda's shoe is 12.45 centimeters long. Felix's shoe is 2.8 centimeters longer than Belinda's shoe. In centimeters, what is the combined length of their two shoes?

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.