Mathematical manuscripts of factors and multiples

Mathematical handwritten newspaper pictures of factors and multiples 1

Factor and multiple mathematics handwritten newspaper picture 2

Mathematical handwritten newspaper pictures of factors and multiples 3

Contents of mathematical manuscripts of factors and multiples:

Math factors and multiples exercises in the second volume of the fifth grade.

Fill in the blanks.

1. In natural numbers, the smallest odd number is (), the smallest even number is (), the smallest prime number is (), and the smallest composite number is ().

The minimum two digits of multiples of 2.2 and 5 are (), and the maximum two digits are (). There is a factor of 3, which is also a multiple of 2 and 5. The smallest three digits are () and the largest three digits are ().

3. 1024 minus at least () is a multiple of 3, and 1708 plus at least () is divisible by 5.

4. if a× b = c (A, b and c are integers other than 0), then c is a multiple of sum, and a and b are C.

5. A natural number less than 30 is a multiple of 8 and 12. This number is ().

6. Two continuous natural numbers with prime numbers are () and (); There are () and () continuous natural numbers, three of which are composite numbers.

7. In the numbers 15, 18, 29, 35, 39, 4 1, 47, 58, 70 and 87:

① Even numbers have (); ② Odd numbers have ();

③ The multiple of 3 is (); The multiple of 4 5 is ();

(5) Prime numbers have (); ⑥ The composite number has ().

8. Choose three numbers from 0, 1, 7, 8 and 5, and form multiples of 3 and 5 at the same time. The smallest three digits are ().

9. The sum of three consecutive odd numbers is 45, which are (), () and () respectively.

10. 100, the sum of the largest prime number and the smallest composite number is (), and the difference is ().

1 1. It is a multiple of 56 and a multiple of 7. These numbers may be ().

12. The sum of two prime numbers is 18 and the product is 65. These two prime numbers are () and ().

13. Fill in the appropriate prime numbers in brackets.

①8=( )+( ) ② 12=( )+( )+( )

③ 18=( )+( )+( )

④24=( )+( )=( )+( )=( )+( )

14. Fill in a number to make it a multiple of 3. (Write all the filling methods in brackets)

8( ) 4 6( ) 2 3 1( )

Within 16.20, there are () for even numbers and () for odd numbers.

17. The maximum factor of a number is 37, and the' minimum multiple' of this number is ().

18. The product of three prime numbers is 100 1. These three prime numbers are (), () and () respectively.

Second, the judgment question.

1. Odd numbers are smaller than even numbers. () 2. The factor of a number must be less than its multiple. ( )

3. The product of prime number and prime number is still prime number. () 4. It is a multiple of 3 and must be a multiple of 9. ( )

5. The sum of two prime numbers must be even. () 6. The prime number must be odd and the composite number must be even. ( )

7. The factor of a number is less than its multiple. () 8. Because 7× 8 = 56, 56 is a multiple and 7 and 8 are factors. ( )

Third, decompose the following figures into prime factors.

( 1) 18= (2)24=

Fourth, thinking training.

1. There is a box of apples. Count 2, 3, 4 and 5 at a time. You just finished counting. How many apples are there in this basket?

Guess the phone number

0592-A B C D E F G

Hint: the minimum multiple b of A-5-the maximum factor d of the minimum natural number C-5-it is both a multiple and a factor e of 4-all its factors are 1, 2,3,6 f-all its factors are 1, 3.

G- it has only one factor, and this number is.

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