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

#### Number of problems found: 73

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

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