Natural numbers + divisibility - practice problems - page 8 of 14
Number of problems found: 279
- The sum
The sum of five consecutive odd numbers is 75. Please find out the sum of the second and fourth of them. - Common divisors
Find all common divisors of numbers 30 and 45. - LCM of two number
Find the smallest multiple of 63 and 147 - Divisibility 47523
Which of the top ten is not a divisible number of 2520? Use divisibility features to solve - Calculate 31861
Calculate the digit sum of 1 345 901 - Consecutive 8004
The sum of five consecutive odd numbers is 35. What are these numbers? - How many
How many double-digit numbers divided by nine give the rest of the seven? - Sum of the digits
How many are two-digit natural numbers that have the sum of the digit 9? - Digit sum
Determine how many integers greater than 900 and less than 1,001 have the digit sum digit of the number 1. - Divisors
Find all divisors of number 432. How many are them? - Smallest 42541
Write the number 937289 larger than the smallest 6-digit odd number. - Four-digit 80469
Find the two smallest and two largest four-digit numbers divisible by six. - Is prime?
Which of the following numbers is prime? 21,11,18,25 - Denotes 32113
Write a formula for an even number x if y denotes any odd number. - Three-digit 66854
How many three-digit numbers with a digit sum of 9, in which no digit can repeat? - Digit sum
Find the smallest natural number n, the digit sum of which equals 37. - Divisibility 2
How many divisors have integer numbers 80? - Primes 2
Which prime number is number 2026 divisible? - Tractor wheels
The tractor's front wheel has a circumference of 18 dm and the rear 60 dm. We will make a red mark on the lowest point of both wheels. The tractor then starts. At what distance from the start will both marks appear identically at the bottom again? - (circumference) 5464
The garden is 90m long. What is the smallest width if it is possible to walk (circumference) in steps of 80 cm or 50 cm?
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