GCF and LCM

Front

Which of these is a factor of 15?

2

,

3

,

10

,

30

Back

3

Front

Which is not a factor of 36? Options: 3, 6, 36, 72

Back

72

Front

GCF of 8 and 12?

Back

4

Front

Rose picked 18 tulips and 20 daffodils. She divided the flowers into groups so that the same number of tulips and daffodils were in each bouquet. What is the greatest number of bouquets she could have made?

Back

2

Front

Which of the following is a multiple of 8? Options: 4, 24, 20, 100

Back

24

Front

Which visitor each day will be the first one to get both a free bumper sticker (every fourth visitor) and a free key chain (every tenth visitor)?

Back

20th

Front

What is the GCF of 21 and 30?

Back

3

Front

What is the LCM of 6 and 7?

Back

42

Front

Wilhelm solved a problem by making these lists:

10: 20, 30, 40, 50, 60

15: 15, 30, 45, 60

What problem was he solving? (LCM or GCF)

Back

LCM

Front

There are 12 girls and 15 boys in a class. The teacher wants to make reading groups with the same number of girls and the same number of boys in each group. What is the greatest number of reading groups that can be made?

Back

3