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Definitions
Types of Numbers
Factoring
Mystery Numbers
100
You land on these numbers when you skip count by a certain number.
What are multiples?
100
You land on these numbers when you skip count by 2.
What are the Even numbers?
100
These are all the factors of 18.
What are 1, 2, 3, 6, 9, and 18?
100
This number is even. This number is less than 20 This number is a multiple of 9.
What is 18?
200
These are the whole numbers that you multiply together to get a certain number.
What are factors?
200
These numbers can make only one rectangle from tiles, and their only factors are 1 and themselves.
What are Prime numbers?
200
These numbers are all the factors of 72.
What are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72?
200
This number divisible by 3. This number is divisible by 5. This number is less than 30.
What is 15?
300
This is the result of adding two or more numbers.
What is the sum?
300
These numbers are the result of multiplying a number by itself.
What are the Square numbers?
300
These three numbers when multiplied together have 42 as their product.
What are 3 x 7 x 2?
300
This number odd. This number is less than 60. This number is divisible by 5. Both digits of this number are the same.
What is 55?
400
This is the result of multiplying two or more numbers.
What is the product?
400
These numbers have more factors beyond 1 and themselves.
What are composite numbers?
400
These five numbers when multiplied together have 72 as their product.
What are 2 x 2 x 2 x 3 x 3
400
This number is square. This number is odd. This number is less than 20. This number is not divisible by 3.
What is 1?
500
This is the result of subtracting one number from another.
What is the difference?
500
The digits of these numbers always end in 1, 3, 5, 7, and 9.
What are the Odd numbers?
500
These numbers are all the prime numbers between 10 and 20.
What are 11, 13, 17, 19?
500
This number is prime. This number is greater than 48. This number is less than 60. If you subtract 4 from this number the result is a square number.
What is 53?