Natural numbers - 7th grade (12y) - math problems
Number of examples found: 132
- Prime factors
Factor the number 6600 into the product of prime numbers.
- The sum
The sum of five consecutive odd numbers is 75. Find out the sum of the second and fourth of them.
- Lcm of three numbers
What is the Lcm of 120 15 and 5
- Divide 5
Divide 288 in the following ratio 3 : 4 : 5
Find two summands of the number 42, so that its product is minimized.
- Digit sum
Determine for how many integers greater than 900 and less than 1,001 has digit sum digit of the digit sum number 1.
What number should be placed instead of the asterisk in number 702*8 to get a number divisible by 6?
- Prime factors
Write 98 as product of prime factors
Determine all divisors of number 84.
In the bowl are plums. How many would be there if we can divide it equally among 8, 10 and 11 children?
- Factors 2
A number has 3 identical factors. If 1 of them is 18. Find the number step by step
- Counting number
What is the smallest counting number divisible by 2,5,7,8 and 15?
- How many
How many double-digit numbers greater than 30 we can create from digits 0, 1, 2, 3, 4, 5? Numbers cannot be repeated in a two-digit number.
How many times should be broken chocolate consisting of 10 × 12 pieces to get the 120 parts?
- Pages counting
There are pages numbered from 2 to 104 in the book. How many digits have to be printed to number the pages?
- Number with ones
The first digit of the number is 1, if we move this digit to the end we get a 3 times higher number, which is the number?
- Year 2020
The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options.
- Hello adding
Fill letters instead of digits so the indicated sum (equal letters represent equal digits). What number is hidden under the letter J? A A H A H O A H O J -------------------------- 4 3 2 1
The sum and the product of three integers is 6. Write largest of them.
- Wide field
The field is 203 meters wide 319 meter long, what is the greater length of the rope by which length and width can be measured and find the exact number of time.