Math 1 Warm Up 2/26/2018

Directions: Write the question and the answer for each problem.

A. 3+7=¿ B. 10−7=¿

C. 8 ∙2=¿ D. 162

=¿

E. Are there any connections between the questions above? Explain.

Tray Logo

Carton

Pizza Salad

Sandwich

Name: ______________________________________________________ Date: ______ Period: ______

Three Reads: The Cafeteria Story

Read #1: What is this story about?

Read #2: What are the quantities in the story?

Read #3: What mathematical questions can we ask about the story?

Read #1: What is this story about?

Write down everything you remember from the story.

Read #2: What are the quantities in the story?

What numbers are in the story?

What do those numbers represent?

Read #3: What mathematical questions can we ask about the story?

Write down math questions that you can ask about the story.

Three Reads: The Cafeteria Story

Elvira, the cafeteria manager, has just received a shipment of new trays with the school logo

prominently displayed in the middle of the tray. After unloading 4 cartons of trays in the pizza line,

she realizes that students are arriving for lunch and she will have to wait until lunch is over before

unloading the remaining cartons. The new trays are very popular and in just a couple of minutes 24

students have passed through the pizza line and are showing off the school logo on the trays. At

this time, Elvira decides to divide the remaining trays in the pizza line into 3 equal groups so she

can also place some in the salad line and the sandwich line, hoping to attract students to the other

lines. After doing so, she realizes that each of the three serving lines has only 12 of the new trays.

Three Reads: The Cafeteria Story

Elvira, the cafeteria manager, has just received a shipment of new trays with the school logo

prominently displayed in the middle of the tray. After unloading 4 cartons of trays in the pizza line,

she realizes that students are arriving for lunch and she will have to wait until lunch is over before

unloading the remaining cartons. The new trays are very popular and in just a couple of minutes 24

students have passed through the pizza line and are showing off the school logo on the trays. At

this time, Elvira decides to divide the remaining trays in the pizza line into 3 equal groups so she

can also place some in the salad line and the sandwich line, hoping to attract students to the other

lines. After doing so, she realizes that each of the three serving lines has only 12 of the new trays.

Name: ______________________________________________________ Date: ______ Period: ______

The Cafeteria Story

Key Idea: Can you work backwards to “undo” the actions that ended with 12 trays in each line?

Think about the Cafeteria Story. How many trays were in each of the cartons Elvira unloaded at the beginning?