|
School
cafeterias plan lunches for students based on what students
like to eat. They keep track of lunches served, so they can
order enough food.
 How many pizza
lunches should they plan for next week?
The table shows the number of
lunches served in a week.
|
| Day |
Lunch |
Number
Served |
| Monday |
Chicken
nuggets |
295 |
| Tuesday |
Pizza |
343 |
| Wednesday |
Hamburgers |
189 |
| Thursday |
Hotdogs |
225 |
| Friday |
Tacos |
252 |
|
Step
1 What
do you know?
You know how many students
bought pizza lunches last week. |
|
Step
2 Do
you need an exact answer or will an estimate do? Estimate.
You don't know exactly how many students will eat lunch. |
Step
3 Decide
whether your estimate should be greater than or less than
the number of pizza lunches served last week.
To be sure that there will be enough
lunches, the estimate should be greater than
343. |
The
cafeteria provides milk with each meal. How many cartons of milk
did the cafeteria need on Tuesday? 
