1.1: Snacks from the Concession Stand
 Could Clare have purchased 2 pretzels, 2 drinks, and 2 bags of popcorn? Explain your reasoning.
 Could she have bought 1 pretzel, 1 drink, and 5 bags of popcorn? Explain your reasoning.
Let’s use what we know about decimals to make shopping decisions.
You are planning a dinner party with a budget of \$50 and a menu that consists of 1 main dish, 2 side dishes, and 1 dessert. There will be 8 guests at your party.
Choose your menu items and decide on the quantities to buy so you stay on budget. If you choose meat, fish, or poultry for your main dish, plan to buy at least 0.5 pound per person.
Use the worksheet to record your choices and estimated costs. Then find the estimated total cost and cost per person. See examples in the first two rows.
The budget is \$ ___________ per guest.
item  quantity needed 
advertised price 
estimated subtotal (in dollars) 
estimated cost per person (in dollars) 


row 1  ex. main dish: fish  4 pounds  \$6.69 per pound 
$4\boldcdot 7=28$  $28\div 8 = 3.50$ 
row 2  ex. dessert: cupcakes 
8 cupcakes  \$2.99 per 6 cupcakes 
$2\boldcdot 3 = 6$  $6\div 8= 0.75$ 
row 3  main dish:


row 4  side dish 1:


row 5  side dish 2:


row 6  dessert:


row 7  estimated total 
Is your estimated total close to your budget? If so, continue to the next question. If not, revise your menu choices until your estimated total is close to the budget.
How much would it cost to plant the grass on a football field? Explain or show your reasoning.
We often use decimals when dealing with money. In these situations, sometimes we round and make estimates, and other times we calculate the numbers more precisely.
There are many different ways we can add, subtract, multiply, and divide decimals. When we perform these computations, it is helpful to understand the meanings of the digits in a number and the properties of operations. We will investigate how these understandings help us work with decimals in upcoming lessons.