NC.6.NS.4 Review

Which of the following is true of the numbers 4 and 10?

• The greatest common factor is 2.

• The least common multiple is 4.

• The greatest common factor is 20.

• The least common multiple is 40.

What is the least common multiple of 6 and 12?

• 6

• 12

• 18

• 72

At the first baseball game of the season, every 6th person entering the ballpark received a coupon for a free hot dog. Every 10th person received a coupon for a free soft drink. What is the number of the first person to enter the ballpark that received a coupon for a free hot dog and a coupon for a free soft drink?

• 10th

• 16th

• 30th

• 60th

At the grand opening of a new store, every 9th customer will receive a balloon and every 12th customer will receive a $10 gift certificate. Which customer will be the first to get both a balloon and gift certificate?

• 24^th customer

• 36^th customer

• 54^th customer

• 72^nd customer

Which expression shows another way to write

 $36+16$  

•  $4\left(9\right)+4$  

•  $4\left(9+4\right)$  

•  $6\left(6+8\right)$  

•  $\left(6+4\right)\left(6+4\right)$  

Claude is counting by 9s beginning at zero. Tyler is counting by 12s beginning at zero. What is the smallest same number that they both will say as they count?

• 3

• 18

• 36

• 72

Which expression is equivalent to $20+64$   

•  $4+\left(16+60\right)$  

•  $4+\left(5+16\right)$  

•  $4\left(16+60\right)$  

•  $4\left(5+16\right)$  

What is the least common multiple of 10 and 12?

• 60

• 100

• 120

• 200

A teacher has to make groups from her class of 24 boys and 18 girls.

· Each group will have boys and girls.

· Each group will have the same number of girls.

· Each group will have the same number of boys.

· All students will be in a group.

What is the greatest number of groups the teacher can make?

• 3

• 4

• 6

• 9

What is the greatest common factor of 54 and 90?

• 9

• 18

• 30

• 45