standard_description: Interpret a fraction as division of the numerator by the denominator (a/b = a ÷ b). Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers, e.g., by using visual fraction models or equations to represent the problem. For example, interpret 3/4 as the result of dividing 3 by 4, noting that 3/4 multiplied by 4 equals 3, and that when 3 wholes are shared equally among 4 people each person has a share of size 3/4. If 9 people want to share a 50-pound sack of rice equally by weight, how many pounds of rice should each person get? Between what two whole numbers does your answer lie?
problem_activity: Task
2 bottles of water cost $5.00.
Fill in the table that shows the costs for 4, 6, and 8 bottles. Find the cost for a single bottle in each case.
| Number of bottles | Cost (\$) | Cost per bottle |
|-------------------|-----------|-----------------|
|       $$2$$       |   $$5$$   |                 |
|       $$4$$       |           |                 |
|       $$6$$       |           |                 |
|       $$8$$       |           |                 |
5 granola bars cost $4.00
Fill in the table that shows the costs for 10, 15, and 20 granola bars. Find the cost for a single granola bar in each case.
| Number of granola bars | Cost (\$) | Cost per bar |
|------------------------|-----------|--------------|
|         $$5$$          |   $$4$$   |              |
|         $$10$$         |           |              |
|         $$15$$         |           |              |
|         $$20$$         |           |              |
Explain why if you can buy $a$ items for $b$ dollars, or buy $2a$ items for $2b$ dollars, the cost per item is the same in either case.


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