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

Number of problems found: 82

• Digits
Write the smallest and largest 2-digit natural number.
• 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?
• Roman numerals
Write numbers written in Roman numerals as decimal.
• Written number
Place+values x ten thousands =30 thousands
• Weeks
38 weeks is equal to how many days?
• Integers
May be the sum of two integers less than their difference?
• Quotient
Determine the quotient (q) and the remainder (r) from division numbers 100 and 8. Take the test of correctness.
• Division
Which number in division 16 give 12 and the rest 3?
• 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.
• Expression
If A=2 B=3 evaluate expression A(B+A) and multiply it by A
• What is missing (1000)
What number is to add to get 1000?
• Cubic
Convert 660 m3 of natural gas volume to energy units kWh. Combustion of 1 cubic meter of natural gas is released energy 10.55 kWh.
• Identity
123456789 = 100 Use only three plus or minus characters to correct previous identity/equation.
• Saving
Mom said that Suzan saves about 120 EUR (rounded to tens). How many euros could she at least save (minimum)?
• Equation algebraogram
Solve the equation: oco + ivo = cita How much has the task of solutions?
• Unknown number
I think the number: Its half is 16 bigger than his quarter. I think the number N . ..
• Classmates
Roman is ranked 12th highest and eleventh lowest pupil. How many classmates does Roman have?
• 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?
• Number unknown
Adela thought the two-digit number, she added it to its ten times and got 407. What number does she think?

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Natural numbers - math problems. Examples for 5th grade (the fifth graders).