Divisibility + addition - practice problems
Number of problems found: 25
- Arithmetic progressions.
Find the sum of all the numbers between 9 and 204, which is exactly divisible by 3. - Two pieces 2
Two pieces of length 12/5 m and 23/9 m are cut from a rope of length 13 m. Find the length of the remaining rope. - Determine 82975
Determine the sum of all positive odd numbers less than 78 - Remainders 81569
If we divide numbers by a divisor of 15, we get several different remainders. Write the sum of all possible even remainders that we get this way.
- Sum of AP members
Find the sum of all the numbers between 8 and 258 that are divisible by 5. - What is 20
What is the least number that should be added to 2497 so that the sum of the digits is divisible by 5, 6, and 10? - Calculate 67294
Calculate the sum of all divisors of the number 70. - 5 digits
You have the following digits: 9, 8, 0, 1, 5. Write the smallest, even five-digit number if one digit is repeated three times and the other digits are not repeated. The digit sum of the number is: a) 9 b) 6 c) 8 d) 23 - What is 16
What is the sum of three consecutive even integers such that six more than twice the second is 2/3 of the first increased by 3/2 of the third?
- Composed 42551
Write a number 28793 smaller than the largest 5-digit number composed of various odd numbers. - Calculate
Calculate the sum of all three-digit natural numbers divisible by five. - Decompose 37101
Decompose the number of primes and find its digit sum: 180, 232, 460, 240, 365, - Sum of odd numbers
Find the sum of all odd integers from 13 to 781. - Calculate 31861
Calculate the digit sum of 1 345 901
- Three-digit 9601
Majka researched multi-digit numbers, in which odd and even numbers alternate regularly. Those who start with an odd number are called comics, and those who start with an even number are called cheerful. (For, number 32387 is comic, and number 4529 is hil - Different 7909
Kryštof sells 10 bells at different prices: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 euros. He needs to pack all the bells into 3 boxes so that the price of the bells in each box is the same. How many ways can he do this? A)1 b)2 c)3 d)4 e)cannot be divided in this - Simultaneously 7748
The monitor screen is blank. Four new wheels appear on the screen every seven seconds when the beep sounds. On the contrary, three wheels disappear from the screen every eleven seconds. If both actions should take place simultaneously, the number of circl - Divisible 7255
Delete two digits from the number 547 191 807 to get the smallest number divisible by 5. Write the sum of the deleted numbers - Multiples
What is the sum of the multiples of number 7 that are greater than 30 but less than 56?
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