Number Properties Quiz

QUESTIONS

1. An odd number plus or minus an odd number will be...

        A) Odd

        B) Even

 

2. An odd number multiplied by an odd number will be...

        A) Odd

        B) Even

 

3. An even number is by definition...

        A) Divisible by two

        B) Divisible by one

 

4. An even number multiplied by an odd number will be...

        A) Odd

        B) Even

 

5. Adding a negative number is the same as...

        A) Subtracting the positive version of the number

        B) Adding the positive version of the number

 

6. A negative number multiplied by a negative number will be...

        A) Positive

        B) Negative

 

7. A number plus a larger negative number will have a...

        A) Positive result

        B) Negative result

 

8. A number's absolute value represents its...

        A) Sign

        B) Distance from zero

 

9. Any number divided by zero is...

        A) Zero

        B) Undefined

 

10. Zero divided by any number is...

        A) Zero

        B) Undefined

 

11. Zero is positive...

        A) True

        B) False

 

12. Zero is negative...

        A) True

        B) False

 

13. Zero is divisible by any number...

        A) True

        B) False

 

14. Zero is even...

         A) True

        B) False

 

15. Zero is odd...

         A) True

        B) False

 

ANSWER KEY:

1B, 2A, 3A, 4B, 5A, 6A, 7B, 8B, 9B, 10A, 11B, 12B, 13A, 14A, 15B

 

PRACTICE PROBLEMS

1. Fill in the blank with either "Odd" or "Even":

Even + Odd =                    

Even x Odd =                    

(Even + Odd) x Odd =                    

(Odd + Odd) x Even =                    

 

2. List the prime factors of the following numbers: 20, 21, 34, 63, 144

3. What is 110 + (-20)?

4. What is 110 - (-20)?

5. What is (-5)(-5)(-2)?

6. What is 7 + (-15)?

7. How many whole numbers satisfy BOTH of the following inequalities?

a) X < 10

b) X > (-2)

 

ANSWER KEY:

1: Odd, Even, Odd, Even

2: 2x2x5; 3x7; 2x17; 3x3x7; 2x2x2x2x3x3

3: 90

4: 130

5: -50

6: -8

7. 11 (-1,0,1,2,3,4,5,6,7,8,9)