Prime numbers - 6th grade (11y) - math problems
Number of problems found: 121
- Prime factors
Factor the number 6600 into the product of prime numbers.
- Prime factors
Write 98 as a product of prime factors
- Decomposition
Make decomposition using prime numbers of number 155. Result write as prime factors (all, even multiple)
- John Smith
John Smith is reading a 435-page novel. If he reads the same number of pages per day and the number is a prime number greater than 10, how many pages per day will he read?
- Lcm of three numbers
What is the Lcm of 120 15 and 5
- Count of roots
How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
- Fractions
Sort fractions ? by its size. Result write as three serial numbers 1,2,3.
- Lcm 2
Create the smallest possible number that is divisible by numbers 5,8,9,4,3
- Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9?
- Common divisors
Find all common divisors of numbers 30 and 45.
- LCD 2
The least common denominator of 2/5, 1/2, and 3/4
- Number
What number should be placed instead of the asterisk in number 702*8 to get a number divisible by 6?
- LCM of two number
Find the smallest multiple of 63 and 147
- Numbers
Determine the number of all positive integers less than 4183444 if each is divisible by 29, 7, 17. What is its sum?
- What is 13
What is the number between 50 and 55 that is divisible by 2,3,6,9?
- Plums
In the bowl are plums. How many would be there if we can divide it equally among 8, 10 and 11 children?
- Decompose
Decompose into primes and find the smallest common multiple n of (16,20) and the largest common divisor D of the pair of numbers (140,100)
- LCM
What is the least common multiple of 5, 50, 14?
- Counting number
What is the smallest counting number divisible by 2,5,7,8 and 15?
- MO Z6-6-1
Write integers greater than 1 to the blanks in the following figure, so that each darker box was product of the numbers in the neighboring lighter boxes. What number is in the middle box?
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