Natural numbers - 7th grade (12y) - math problems
Number of problems found: 175
- Unknown numbers
The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
- Closest natural number
Find the closest natural number to 4.456 to 44.56 and 445.6.
- Sum of four numbers
The sum of four consecutive natural numbers is 114. Find them.
How many three-digit natural numbers are divisible by 25?
- Sum of seven
The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
- Count of roots
How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
What is the remainder of the division of natural numbers 293 and 7?
- Divisible by nine
How many three-digit natural numbers in total are divisible without a remainder by the number 9?
How many rectangles with area 8713 cm2 whose sides are natural numbers are?
- Dd 2-digit numbers
Find all odd 2-digit natural numbers compiled from digits 1; 3; 4; 6; 8 if the digits are not repeated.
- Prime factors
Factor the number 6600 into the product of prime numbers.
- Telephone numbers
How many 7-digit telephone numbers can we put together so that each number consists of different digits?
- Odd numbers
The sum of four consecutive odd numbers is 1048. Find those numbers ...
- Unknown number 7
16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number.
- Common divisors
Find all common divisors of numbers 30 and 45.
- Lcm of three numbers
What is the Lcm of 120 15 and 5
Determine all divisors of number 84.
- Even / odd numbers
a / Using variable n write two consecutive odd numbers. b / the sum of three consecutive odd numbers is 333. What are this numbers?
- The sum
The sum of five consecutive odd numbers is 75. Find out the sum of the second and fourth of them.
- How many
How many numbers are less than 222 with a digit sum is 8?
Natural numbers - math word problems. Examples for 7th grade (seventh).