Math Riddles: What Multiplies Without Growing Bigger?

Riddle: I am a number. If you add me to myself, you get the same as multiplying me by two. What number am I?
Answer: Any number works, because adding a number to itself equals multiplying it by two.

Riddle: I am a number. If you divide me by 1, nothing changes. What number am I?
Answer: Any number.

Riddle: I am a number that becomes zero when you subtract me from itself. What number am I?
Answer: Any number.

Riddle: What number comes after 9 and before 11?
Answer: 10

Riddle: I am a number. When you multiply me by 0, I always become 0. What number am I?
Answer: Any number.

Riddle: What is the smallest whole number?
Answer: 0

Riddle: I am a number that has no value. What number am I?
Answer: 0

Riddle: If you add 5 and 5, what do you get?
Answer: 10

Riddle: I am a number. If you subtract 1 from me, I become 9. What number am I?
Answer: 10

Riddle: What is the result of 2 + 2?
Answer: 4

Riddle: I am a number between 1 and 3. What number am I?
Answer: 2

Riddle: If you have 3 apples and get 2 more, how many do you have?
Answer: 5

Riddle: I am a number. If you double me, you get 8. What number am I?
Answer: 4

Riddle: What is half of 10?
Answer: 5

Riddle: I am a number. When you add me to 0, I stay the same. What number am I?
Answer: Any number.

Riddle: What is 6 minus 3?
Answer: 3

Riddle: I am a number. If you multiply me by 1, I do not change. What number am I?
Answer: Any number.

Riddle: What is 7 plus 3?
Answer: 10

Riddle: I am a number that comes before 5. What number am I?
Answer: 4

Riddle: What is 1 + 1?
Answer: 2

Math Riddles Level 21 Answer

Riddle: I am a number that stays the same when you add zero to me. What number am I?
Answer: Any number

Riddle: I am a number that becomes zero when multiplied by anything. What number am I?
Answer: 0

Riddle: I am a number that equals 10 when you add 7 and 3. What number am I?
Answer: 10

Riddle: I am a number that comes right after 19. What number am I?
Answer: 20

Riddle: I am a number that is double of 15. What number am I?
Answer: 30

Riddle: I am a number that is half of 20. What number am I?
Answer: 10

Riddle: I am a number that you get when you add 9 and 9. What number am I?
Answer: 18

Riddle: I am a number that is one more than 99. What number am I?
Answer: 100

Riddle: I am a number that stays the same when you multiply it by 1. What number am I?
Answer: Any number

Riddle: I am a number that becomes 5 when you add 2 and 3. What number am I?
Answer: 5

Riddle: I am a number that is 3 less than 10. What number am I?
Answer: 7

Riddle: I am a number that is 4 more than 6. What number am I?
Answer: 10

Riddle: I am a number that equals 12 when you add 6 and 6. What number am I?
Answer: 12

Riddle: I am a number that comes before 50. What number am I?
Answer: 49

Riddle: I am a number that comes after 59. What number am I?
Answer: 60

Riddle: I am a number that is 2 times 8. What number am I?
Answer: 16

Riddle: I am a number that equals 14 minus 4. What number am I?
Answer: 10

Riddle: I am a number that is 1 more than 10. What number am I?
Answer: 11

Riddle: I am a number that becomes 8 when you add 5 and 3. What number am I?
Answer: 8

Riddle: I am a number that is 20 divided by 2. What number am I?
Answer: 10

Math Riddles Level 15

Riddle: I am a number. When you add 10 to me, you get 25. What number am I?
Answer: 15

Riddle: I am a number. When you subtract 5 from me, you get 10. What number am I?
Answer: 15

Riddle: I am a number. If you double me, you get 30. What number am I?
Answer: 15

Riddle: I am a number. When you add me to 20, you get 35. What number am I?
Answer: 15

Riddle: I am a number. If you take 40 and subtract me, you get 25. What number am I?
Answer: 15

Riddle: I am a number. I am 5 more than 10. What number am I?
Answer: 15

Riddle: I am a number. I am half of 30. What number am I?
Answer: 15

Riddle: I am a number. If you add 7 and 8, you get me. What number am I?
Answer: 15

Riddle: I am a number. If you multiply 3 by 5, you get me. What number am I?
Answer: 15

Riddle: I am a number. If you divide 30 by 2, you get me. What number am I?
Answer: 15

Riddle: I am a number. If you add 9 and 6, you get me. What number am I?
Answer: 15

Riddle: I am a number. I come after 14 and before 16. What number am I?
Answer: 15

Riddle: I am a number. If you subtract me from 20, you get 5. What number am I?
Answer: 15

Riddle: I am a number. I am 3 times 5. What number am I?
Answer: 15

Riddle: I am a number. If you add 12 and 3, you get me. What number am I?
Answer: 15

Riddle: I am a number. If you take 50 and subtract 35, you get me. What number am I?
Answer: 15

Riddle: I am a number. I am 10 plus 5. What number am I?
Answer: 15

Riddle: I am a number. If you subtract 0 from me, I stay the same. What number am I?
Answer: Any number (including 15)

Riddle: I am a number. When you add me to 5, you get 20. What number am I?
Answer: 15

Riddle: I am a number. I am one more than 14. What number am I?
Answer: 15

11 15 20 Math Riddles

Riddle: I am a number. When you add 4 to me, you get 15. What number am I?
Answer: 11

Riddle: I am a number. If you double me, you get 22. What number am I?
Answer: 11

Riddle: I am a number. I come right before 12. What number am I?
Answer: 11

Riddle: I am a number. If you add me to 4, you get 15. What number am I?
Answer: 11

Riddle: I am a number. When you subtract 1 from me, you get 10. What number am I?
Answer: 11

Riddle: I am a number. When you add 5 to me, you get 20. What number am I?
Answer: 15

Riddle: I am a number. If you divide me by 3, you get 5. What number am I?
Answer: 15

Riddle: I am a number. I am 10 plus 5. What number am I?
Answer: 15

Riddle: I am a number. When you subtract 5 from me, you get 10. What number am I?
Answer: 15

Riddle: I am a number. I am three times 5. What number am I?
Answer: 15

Riddle: I am a number. When you add 2 and 18, you get me. What number am I?
Answer: 20

Riddle: I am a number. If you multiply 5 by 4, you get me. What number am I?
Answer: 20

Riddle: I am a number. I come right after 19. What number am I?
Answer: 20

Riddle: I am a number. When you divide me by 2, you get 10. What number am I?
Answer: 20

Riddle: I am a number. If you add 15 and 5, you get me. What number am I?
Answer: 20

Riddle: I am a number. I am 9 plus 2. What number am I?
Answer: 11

Riddle: I am a number. If you subtract 7 from 18, you get me. What number am I?
Answer: 11

Riddle: I am a number. I come between 10 and 12. What number am I?
Answer: 11

Riddle: I am a number. If you add 6 and 5, you get me. What number am I?
Answer: 11

Riddle: I am a number. I am 20 minus 9. What number am I?
Answer: 11

Math Riddles For Adults

Riddle: I am a number. If you multiply me by itself, the result is 64. What number am I?
Answer: 8

Riddle: I am a number. When you add me to 25, you get 100. What number am I?
Answer: 75

Riddle: I am a number. If you subtract me from 50, you get 20. What number am I?
Answer: 30

Riddle: I am a number. I am the square root of 49. What number am I?
Answer: 7

Riddle: I am a number. I am 3 less than 100. What number am I?
Answer: 97

Riddle: I am a number. If you divide 144 by me, the result is 12. What number am I?
Answer: 12

Riddle: I am a number. I am 20% of 200. What number am I?
Answer: 40

Riddle: I am a number. If you add 15 and 35, you get me. What number am I?
Answer: 50

Riddle: I am a number. I am 100 divided by 4. What number am I?
Answer: 25

Riddle: I am a number. If you multiply me by 6, you get 60. What number am I?
Answer: 10

Riddle: I am a number. I come after 199. What number am I?
Answer: 200

Riddle: I am a number. If you subtract 9 from me, you get 91. What number am I?
Answer: 100

Riddle: I am a number. I am the sum of 45 and 55. What number am I?
Answer: 100

Riddle: I am a number. I am 10 times 7. What number am I?
Answer: 70

Riddle: I am a number. If you subtract 20 from me, you get 80. What number am I?
Answer: 100

Riddle: I am a number. I am the difference between 150 and 50. What number am I?
Answer: 100

Riddle: I am a number. If you square me, you get 81. What number am I?
Answer: 9

Riddle: I am a number. If you add 60 and 40, you get me. What number am I?
Answer: 100

Math Riddles And Answers