Numbers - math problems

Number of problems found: 1739

  • Two numbers 7
    numbers The sum of two consecutive even numbers is 30. Find the numbers.
  • Three numbers
    dice How much we increases the sum of three numbers when the first enlarge by 14, second by 15 and third by 16? Choose any three two-digit numbers and prove results.
  • Three-digit numbers
    numbers Use the numbers 4,5,8,9 to write all three-digit numbers without repetition. How many such numbers are there?
  • Ratio of two unknown numbers
    numbers2 Two numbers are given. Their sum is 30. We calculate one-sixth of a larger number and add to both numbers. So we get new numbers whose ratio is 5:7. Which two numbers were given?
  • Three numbers
    dices2 We have three different non-zero digits. We will create all 3 digits numbers from them to use all 3 figures in each number. We add all the created numbers, and we get the sum of 1554. What were the numbers?
  • Unknown numbers
    eq222 The sum of two consecutive natural numbers and their triple is 92. Find these numbers.
  • Big numbers
    numbers How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0
  • 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?
  • Two identical five-digits
    eq1 We have two identical five-digit numbers, but we don't know which ones. When we write one before the first and after the second one we get two six-digit numbers, one of which is three times the other. What are the numbers?
  • Odd numbers
    friends4 The sum of four consecutive odd numbers is 1048. Find those numbers ...
  • Three-digit numbers
    numbers We have digits 0,1,4,7 that cannot be repeated. How many three-digit numbers can we write from them? You can help by listing all the numbers.
  • Seven numbers
    numbers Write seven 4-digit numbers that are divisible by 3 and at the same time by 4.
  • Two numbers
    fractal The sum of the two numbers is 1. Find both numbers if you know that half of the first is equal to one seventh of the second number.
  • AM of three numbers
    arithmet_seq The number 2010 can be written as the sum of 3 consecutive natural numbers. Determine the arithmetic mean of these numbers.
  • Three digits number
    3digit From the numbers 1, 2, 3, 4, 5 create three-digit numbers that digits not repeat and number is divisible by 2. How many numbers are there?
  • Mixing operations with numbers
    numbers Subtract twice the number -23.6 from the difference of the numbers -130 and -40.2.
  • How many 4
    numbers2 How many 4 digit numbers that are divisible by 10 can be formed from the numbers 3, 5, 7, 8, 9, 0 such that no number repeats?
  • Digits
    numbers2 How many natural numbers greater than 4000 which are formed from the numbers 0,1,3,7,9 with the figures not repeated, B) How many will the number of natural numbers less than 4000 and the numbers can be repeated?
  • Two numbers
    third The sum of two numbers is 1. Identify this two numbers if you know that the half of first is equal to the third of second number.
  • House numbering
    byty The residential house has three entrances numbered even numbers, successive immediately behind. The sum of the two numbers on the outside entrances is 68. Calculate the middle of these three numbers.

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