Arithmetic + reason - practice problems - page 15 of 22
Number of problems found: 421
- Divisibility
Write all the integers x divisible by seven and eight simultaneously, for which the following applies: 100 < x < 200. - Series
Andrew wrote this series of numbers: 1,3,7,15, ...., n. Which number in the series does not belong? ... - Trains
Daily passes the same track section 8 pairs of trains with average 2400 passengers. How many people, on average, travel on one train? - Sparrow ball
On the sparrow's ball were males and females. There were 160 sparrows. Males were 24 more than females. How many sparrow females were at a ball?
- Smallest 80368
What is the smallest whole number to replace the known x for: 9> x/3> 4. - 2-3-6-15-42- 62474
A series of numbers was created according to a specific key. Uncover it and fill in the last two missing numbers. 2-3-6-15-42-? -? - Five-digit 30481
Find the smallest five-digit number A432B that is divisible by 15. - Determine 8322
Determine which number belongs instead of the question mark 25 -? - 205 - 610 -1825 - Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9?
- Divisors 6619
Which natural number less than 100 has the largest number of divisors? - How many
How many numbers are less than 222 with a digit sum is 8? - Sum and ratio
The sum and ratio of two numbers are equal to 10. Which numbers are they? - Hens and pigs
Hens and pigs have 46 feet in total. At least how much can heads have? - Number
What number do I think? The third is 6, and a half is two more than its quarter.
- Classroom 3
How many children are in the classroom, where 13 children are higher than Lenka and nine children lower than Lenka? - Difference 1632
The difference between the two numbers is 7. Their product 144. What are the numbers? - Have solution
The sum of four consecutive even numbers is 92. Determine these numbers. - Summands
Find two summands of the number 42 so that its product is minimized. - Classroom
In a classroom are 30 students, and boys are four times more than girls. How many boys are in the class?
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