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

Number of examples found: 132

  • Prime factors
    prime Factor the number 6600 into the product of prime numbers.
  • The sum
    eq1 The sum of five consecutive odd numbers is 75. Find out the sum of the second and fourth of them.
  • Lcm of three numbers
    prime What is the Lcm of 120 15 and 5
  • Divide 5
    ratios2 Divide 288 in the following ratio 3 : 4 : 5
  • Summands
    magic Find two summands of the number 42, so that its product is minimized.
  • Digit sum
    numbers_41 Determine for how many integers greater than 900 and less than 1,001 has digit sum digit of the digit sum number 1.
  • Number
    prime What number should be placed instead of the asterisk in number 702*8 to get a number divisible by 6?
  • Prime factors
    prime Write 98 as product of prime factors
  • Divisibility
    nice_circles Determine all divisors of number 84.
  • Plums
    svestka In the bowl are plums. How many would be there if we can divide it equally among 8, 10 and 11 children?
  • Factors 2
    powers_2 A number has 3 identical factors. If 1 of them is 18. Find the number step by step
  • Counting number
    numbers2_49 What is the smallest counting number divisible by 2,5,7,8 and 15?
  • How many
    numbers2_41 How many double-digit numbers greater than 30 we can create from digits 0, 1, 2, 3, 4, 5? Numbers cannot be repeated in a two-digit number.
  • Chocolate
    cokolada_1 How many times should be broken chocolate consisting of 10 × 12 pieces to get the 120 parts?
  • Pages counting
    books_39 There are pages numbered from 2 to 104 in the book. How many digits have to be printed to number the pages?
  • Number with ones
    numbers2_40 The first digit of the number is 1, if we move this digit to the end we get a 3 times higher number, which is the number?
  • Year 2020
    eq222 The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options.
  • Hello adding
    adding_1 Fill letters instead of digits so the indicated sum (equal letters represent equal digits). What number is hidden under the letter J? A A H A H O A H O J -------------------------- 4 3 2 1
  • Product
    multiplicationchart The sum and the product of three integers is 6. Write largest of them.
  • Wide field
    field The field is 203 meters wide 319 meter long, what is the greater length of the rope by which length and width can be measured and find the exact number of time.

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