Using Decimals in a Shopping Context: IM 6.5.1
[url=https://im.kendallhunt.com/MS/teachers/1/5/1/preparation.html]“Using Decimals in a Shopping Context”[/url] from IM Grade 6 by [url=https://www.geogebra.org/m/gus8ffvr]Open Up Resources[/url] and Illustrative Mathematics. Licensed under the [url=https://creativecommons.org/licenses/by/4.0/]Creative Commons Attribution 4.0 license[/url].
Table of Contents
- Lesson 6.5.1
- IM 6.5.1 Lesson: Using Decimals in a Shopping Context
- Practice 6.5.1
- IM 6.5.1 Practice: Using Decimals in a Shopping Context
IM 6.5.1 Lesson: Using Decimals in a Shopping Context
Clare went to a concession stand that sells pretzels for $3.25, drinks for $1.85, and bags of popcorn for $0.99 each. She bought at least one of each item and spent no more than $10.
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.
[size=150]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.[br][br]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.[br][/size][br]The budget is $ ___________ per guest.
Use the table to record your choices and estimated costs. Then find the estimated total cost and cost per person. See examples in the first two rows.
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.
Calculate the actual costs of the two most expensive items and add them. Show your reasoning.
How will you know if your total cost for all menu items will or will not exceed your budget? Is there a way to predict this without adding all the exact costs? Explain your reasoning.
How much would it cost to plant the grass on a football field? Explain or show your reasoning.
IM 6.5.1 Practice: Using Decimals in a Shopping Context
Mai had $14.50. She spent $4.35 at the snack bar and $5.25 at the arcade. What is the exact amount of money Mai has left?
A large cheese pizza costs $7.50. Diego has $40 to spend on pizzas. How many large cheese pizzas can he afford? Explain or show your reasoning.
Tickets to a show cost $5.50 for adults and $4.25 for students. A family is purchasing 2 adult tickets and 3 student tickets.
Estimate the total cost.
What is the exact cost?
If the family pays $25, what is the exact amount of change they should receive?
Chicken costs $3.20 per pound, and beef costs $4.59 per pound. Answer each question and show your reasoning.
What is the exact cost of 3 pounds of chicken?
What is the exact cost of 3 pound of beef?
How much more does 3 pounds of beef cost than 3 pounds of chicken?
How many [math]\frac{1}{5}[/math]-liter glasses can Lin fill with a [math]1\frac{1}{2}[/math]-liter bottle of water?
How many [math]1\frac{1}{2}[/math]-liter bottles of water does it take to fill a 16-liter jug?
Let the side length of each small square on the grid represents 1 unit. [br][br]Draw two different triangles in the applet below, each with base [math]5\frac{1}{2}[/math] units and area [math]19\frac{1}{4}[/math] units[math]^2[/math].[br][br]Why does each of your triangles have area 19[math]\frac{1}{4}[/math] units[math]^2[/math]? Explain or show your reasoning.
Find each quotient.
[math]\frac{5}{6}\div\frac{1}{6}[/math]
[math]1\frac{1}{6}\div\frac{1}{12}[/math]
[math]\frac{10}{6}\div\frac{1}{24}[/math]