Answer each question and explain or show your reasoning. If you get stuck, consider drawing a double number line diagram.

1. Eight avocados cost $4.

   1. How much do 16 avocados cost?
   2. How much do 20 avocados cost?
   3. How much do 9 avocados cost?

   

2. Twelve large bottles of water cost $9.

   1. How many bottles can you buy for $3?
   2. What is the cost per bottle of water?
   3. How much would 7 bottles of water cost?

   

3. A 10-pound sack of flour costs $8.

   1. How much does 40 pounds of flour cost?
   2. What is the cost per pound of flour?

1. Four bags of chips cost $6.

   1. What is the cost per bag?
   2. At this rate, how much will 7 bags of chips cost?

2. At a used book sale, 5 books cost $15.

   1. What is the cost per book?
   2. At this rate, how many books can you buy for $21?

3. Neon bracelets cost $1 for 4.

   1. What is the cost per bracelet?
   2. At this rate, how much will 11 neon bracelets cost?