Factors/Multiples

1.        What are all the factors for the number 30?

b) 1, 2, 28 30                       b) 1, 2, 3, 5, 6, 10, 15, 30                 c) 5x6

2.       What are the first five multiples of 8?

a)      8, 16, 24, 32, 40                          b) 1, 2, 4, 8          c) 0, 8, 16, 24, 32               d) 0, 1, 8, 16, 24

3.       Which number below is a composite number?

a)      33                                   b) 17                                      c) 43                       d) 97

4.        Which number is prime?

a)      11                                   b) 20                                      c) 39                                       d) 45

5.        What are the factors for the number 24?

a)      3x8 4x6                         b) 1, 2,22, 24                       c) 1, 2, 3, 4, 6, 8, 12, 24                    d) 12 + 12

6.        Which number is prime?

a)      23                                   b) 49                                      c) 77                                       d) 256

7.       Harry works at a donut shop.  The sign says “Buy 6 donuts, get the 7^th free.  How many donuts do you get if you pay for 18?

a)      24                                   b) 21                                      c) 18                                       d) 13

8.       What is the prime factorization for the number 49?

a)      1, 49                               b) 7, 49                                 c) 7,7                                     d) 20, 29

9.  What are possible multiples for 10?

    A)  115, 120, 125, 130        B)  210, 215, 230, 245        C)  1, 2 ,5, 10            D)  110, 120, 130, 140

10.  Which number is divisible by 2?

    A)  456,348                B)  345                        C)  7673                D)  10,103