I'm thinking of a number...

It is odd. The digits add up to 3. It is a composite number. One of the factors is 3. It is NOT a square number. One digit is prime and the other digit is not prime or composite.

• 33

• 21

• 12

• 30

Tags

CCSS.4.OA.B.4

It is an even number. The two digits add up to 12. It is a composite number. It is not square.

• 49

• 64

• 75

• 66

Tags

CCSS.4.OA.B.4

It is even. It is a multiple of 9 and a multiple of 2. It is composite. The digits add up to 9.

• 63

• 27

• 36

• 45

Tags

CCSS.4.OA.B.4

It is a two-digit number that is a multiple of 2. The digits add up to 10. It has only 2 factor pairs (4 factors).

• 82

• 28

• 46

• 19

Tags

CCSS.4.OA.B.4

It is a prime number. If you add the 2 digits you get 7. It is an odd number. The tens digit is one greater than the ones digit.

• 25

• 43

• 16

• 61

Tags

CCSS.4.OA.B.4

It is odd. The sum of the digits is 10. The tens digit is 4 more than the ones.

• 14

• 46

• 37

• 73

Tags

CCSS.5.OA.B.3

My number is one less than a multiple of 7. It is prime. The tens digit is greater than the ones digit.

• 13

• 27

• 41

• 76

Tags

CCSS.4.OA.B.4