Natural numbers - examples
- Z7-I-4 stars 4949
Write instead of stars digits so the next write of product of the two numbers to be valid: ∗ ∗ ∗ · ∗ ∗ ∗ ∗ ∗ ∗ ∗ 4 9 4 9 ∗ ∗ ∗ ∗ ∗ ∗ 4 ∗ ∗
Is the number 214743 divisible by 10?
Charlie bought 7 same chocolates for 14 Eur. How many euros he pay for 27 chocolates?
One brick is 2 kg and half a brick heavy. What is the weight of one brick?
I have 12 balls and my friend has 18. About how many has my friend more balls?
55 weeks is equal to how many days?
After check of textbooks found that every 8-th textbook should be withdrawn. Together 74 textbooks were withdrawn. How many textbooks were in stock before withdrawn and how many after withdrawn?
Cherries in the bowl can be divided equally among 11 or 16 or 4 children. How many is the minimum cherries in the bowl?
27 students of 6.A class is going to a trip. They pay 7 € each. The teacher got 147 €. How many children have not paid?
How many ways are there to arrange 9 books on a shelf?
Write the smallest and largest 3-digit number.
In the bowl are plums. How many would be there if we can divide it equally among 10, 11 and 15 children?
One of the summands is 153. The second is 26 more. Determine the sum of the summands.
In the camp are children. 1/4 went on a trip, 1/2 went to bathe and 99 children remained in the room. How many children are in camp?
- Children in the classroom
How many children are in the classroom, where Ladislav is 10. lightest and 16. heaviest in class?
- Diofant 2
Is equation ? solvable on the set of integers Z?
- Game room
Winner can took win in three types of jettons with value 5, 20 and 200 dollars. What is minimal value of win payable in this values of jettons?
Seedcake costs 50 cents. How many minimum seedcakes we must buy that we can pay in cash only whole euros?
What is the least common multiple of 28, 42, 22?
How many times should be broken chocolate consisting of 5 × 6 pieces to get the 30 parts?