Division + divisibility - practice problems - page 2 of 8
Number of problems found: 153
- Remainder even sum
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. - Digit omission divisibility
In the number 123 456 789, omit the following: a) one digit to create the largest possible number divisible by 3 b) one digit to create the largest possible number divisible by 9 - Divisible by six
Is 2,047,223 divisible by 6? - Which 13
Which numbers are perfectly divisible by 3? 45,904 40,404 145,083 16,674 75,035 (use sum of digits) - Number divisibility nine What digit should X replace so that the number 6X94 is divisible by nine?
- Is prime? Which of the following numbers is prime? 21,11,18,25
- Divisible without remainder Determine the number by which all these numbers, 22, 18, 25, 15, 35, and 10, are divisible without remainder. The number is greater than 1.
- Number divisor sum Calculate the sum of all divisors of the number 70.
- Tourist bench seating
Benches were prepared around the fire. When seven tourists sit on them, one tourist will sit alone on the last bench. When six of them all sat down, one had to stand. How many tourists were at the campfire if we know there were less than 100, and how many - Find two digits
Find the possible values of A and B if the six-digit number 2 A16B6 is divisible by 4 and 9. Please write the result as a composed number. - How many How many double-digit numbers divided by nine give the rest of the seven?
- Find whole
Find whole numbers between 155 and 232 that are divisible by 2, 5, and 10. - AND-NOT-AND
If P is the set of multiples of 2, Q is the set of multiples of 3, and R is the set of multiples of 7, the following integers will be in P and Q but not in R: A=−54 B=−50 C=42 D=100 E=252 - Check divisibility
Check under each column to identify whether each number is divisible by 2, 5, 10, 3, 6, or 9. number; 2; 5; 10; 3; 6; 9 54180; ; ; ; ; ; 624 ; ; ; ; ; ; 2700 ; ; ; ; ; ; 5605 ; ; ; ; ; ; 568 ; ; ; ; ; ; - Rectangle area dimensions
We are to create a square in the shape of a rectangle with an area of 288 m² (square) so that the sides are whole numbers. What are all the dimensions of the rectangular box we can make? How many is the solution? - Dividing
One always remained when dividing the tangerines into packages of 8 or 10. If there were more than 250 and less than 300, how many were there? - Most divisors
Find the number with the most divisors from the natural numbers 1 to 100. - Division residue proof
If n is a natural number that gives a division of 2 or 3 when divided by 5, then n gives a residue of 4 when divided by 5. Prove directly - Four-digit number puzzle
Find all four-digit abcd numbers to which abcd = 20. ab + 16. cd, where ab and cd are double digits numbers from digits a, b, c, and d. - Target extra remainder
The arranger has at his disposal a certain number of colored targets, from which he wants to create a rectangular pattern of a flower bed. If he puts 4,5,6,8,9, or 10 targets in one row, he always has three extra targets. How many targets does it have? De
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