Reason - practice for 10 year olds - page 4 of 10
Number of problems found: 187
- Thirtieth 5806
The surface of the pond is covered with water lilies so that the area covered by water lilies doubles per day. On the thirtieth day, the surface was full of water lilies. On how many days was half of the pond covered with water lilies? - Twins with friend
The twins Danka and Janka went to the cinema with their friend Betka. Only six seats in the second row were available in the cinema. The twins want to sit next to each other. Danka is always to the right of Janka, and Betka is near one of them. How many m - Class alphabet
All 29 pupils in the class are written in a class alphabet. The number of pupils enrolled before Paul is three times higher than those behind him. Calculate how many pupils are enrolled after Paul. - Contains 5683
Livia, Pavla, and Samuel collect knives. Pavla has more of them than Livia and Samuel combined. Livia only contains blades for a short time, so she only has 5 of them, which is the least. He has a total of 25. How many knives does Samuel have?
- Pheasants 5638
Hunters caught the same number of hares and pheasants. Hares and pheasants had the same number of legs. How many hares were there? - Shipments 5620
If you know that a quarter of a mail order and 300 grams weigh the same as the whole shipment, then two such shipments weigh how many grams? - Something 5588
Honza receives pocket money and wants to buy something good with it. If he purchased four cakes, he would have CZK 5 left. If he wanted to buy five cakes, he would be 6 CZK short. If he had bought two pies and three doughnuts, he would have spent all his - Ichthyosaurs 5577
There are five huge aquariums on an island in Jurassic World. At least two and at most six ichthyosaurs swim in each of them, with a different number in each aquarium. How many ichthyosaurs are there in total in all the aquariums? - Remaining 5534
On the table lay eight cards with the numbers 2,3,5,7,11,13,17,19. Fero chose three cards. He added the numbers written on them and found that their sum was 1 more than the sum of the numbers on the remaining cards. Which cards could have been left on the
- Mystery number
A mystery number is between 800 and 920. No digits are the same. The difference between the numbers is 5. What is the mystery number? - Something 5385
Janko got pocket money and wants to buy something good for it. If he purchased four cakes, it would increase by 0.50 euros. If he wanted to buy five cakes, he would miss 0.60 euros. He would spend all his pockets on the rest if he bought two cakes and thr - Identity
123456789 = 100 Correct the given identity/equation only using three plus or minus signs. - Cages
Honza had three cages (black, silver, and gold) and three animals (guinea pig, rat, and puppy). There was one animal in each cage. The golden cage stood to the left of the black cage. The silver cage stood on the right of the guinea pig cage. The rat was - Children 5352
father + mom = children How much does the task have to be solved?
- Darina 5340
If Zina gives Darina one apple, then both girls will have the same. How many more apples does Zina have now than Darina? - Equation algebraogram
Solve the equation: oco + ivo = cita How much has the task of solutions? - Divisions 5272
Find out where the flea jumps if it jumps from the number: A) -17 by 28 pieces towards larger numbers. B) from the number -9 by 16 divisions towards smaller digits - Three-digit 5226
How many different three-digit natural numbers can be created so that the digits are different and the last digit is 0? - Wine
A bottle of wine costs 21 euros, and wine is 20 times more expensive than a bottle. How much does a bottle cost?
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