Natural numbers - 7th grade (12y) - math problems

Number of problems found: 175

  • Unknown numbers
    eq222_3 The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
  • Closest natural number
    numbers2_31 Find the closest natural number to 4.456 to 44.56 and 445.6.
  • Sum of four numbers
    seq_6 The sum of four consecutive natural numbers is 114. Find them.
  • Twenty-five
    prime How many three-digit natural numbers are divisible by 25?
  • Sum of seven
    numbers_5 The sum of seven consecutive odd natural numbers is 119. Determine the smallest of them.
  • Count of roots
    eggs How many solutions has equation x. y = 7757 with two unknowns on the set of natural numbers?
  • Remainder
    dice What is the remainder of the division of natural numbers 293 and 7?
  • Divisible by nine
    numbers_2 How many three-digit natural numbers in total are divisible without a remainder by the number 9?
  • Rectangles
    rectangles How many rectangles with area 8713 cm2 whose sides are natural numbers are?
  • Dd 2-digit numbers
    numbers_49 Find all odd 2-digit natural numbers compiled from digits 1; 3; 4; 6; 8 if the digits are not repeated.
  • Prime factors
    prime Factor the number 6600 into the product of prime numbers.
  • Telephone numbers
    phones How many 7-digit telephone numbers can we put together so that each number consists of different digits?
  • Odd numbers
    friends4_2 The sum of four consecutive odd numbers is 1048. Find those numbers ...
  • Unknown number 7
    percents2_9 16% of the unknown number is by 21 less than unknown number itself. Determine the natural unknown number.
  • Common divisors
    prime Find all common divisors of numbers 30 and 45.
  • Lcm of three numbers
    prime What is the Lcm of 120 15 and 5
  • Divisibility
    nice_circles Determine all divisors of number 84.
  • Even / odd numbers
    parne_neparne 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
    eq1 The sum of five consecutive odd numbers is 75. Find out the sum of the second and fourth of them.
  • How many
    numbers2_3 How many numbers are less than 222 with a digit sum is 8?

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Natural numbers - math word problems. Examples for 7th grade (seventh).