Natural numbers - 5th grade (10y) - math problems

Number of problems found: 73

  • Sum of the digits
    numbers2 How many are two-digit natural numbers that have the sum of the digits 9?
  • Primes 2
    prime_table Which prime numbers is number 2025 divisible?
  • The number 3
    numbers_1 Ski organizers should print the start numbers from 1 to 45. How many times will they use the number 3 when printing?
  • House numbering
    byty_1 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.
  • Parenthesis
    casino Fill in the examples correctly brackets: A) 7.9+12:3-2 =23 B) 7.9+12:3-2=75
  • What is missing (1000)
    red_minus What number is to add to get 1000?
  • Digits
    pin_keyboard How many odd four-digit numbers can we create from digits: 0, 3,5,6,7?
  • Expression
    numbers If A=2 B=3 evaluate expression A(B+A) and multiply it by A
  • Digits
    numbers_2 Write the smallest and largest 2-digit number.
  • Quotient
    kohut Determine the quotient (q) and the remainder (r) from division numbers 100 and 8. Take the test of correctness.
  • Roman numerals
    roman_1 Write numbers written in Roman numerals as decimal.
  • Weeks
    calendar 38 weeks is equal to how many days?
  • Integers
    calculator_mechanical May be the sum of two integers less than their difference?
  • I think
    numbers_49 I think a number. When I multiply it by five, and after that I subtract 477, I get the same number as if I multiplied it twice. What number do I think?
  • Division
    numbers_36 Which number in division 16 give 12 and the rest 3?
  • Saving
    angles Mom said that Suzan saves about 120 EUR (rounded to tens). How many euros could she at least save (minimum)?
  • Identity
    numbers_49 123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
  • Written number
    numbers2_49 Place+values x ten thousands =30 thousands
  • Seven times
    numberline_12 Which number seven times is just as higher as 27, how much is smaller than 29?
  • Summand
    plus One of the summands is 145. The second is 10 more. Determine the sum of the summands.

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