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Federal Way Public Schools  
Number Sense
Lesson 5
Estimation
  Objectives/Vocab/Tips > Examples 1 | 2 | 3 > Practice: 1 | 2 | 3 | 4 > Reflection

Practice 1:

Paul's mother asked him to get the following items from the grocery store. The items and prices are listed below.

spaghetti noodles
5 bags
$.89 per bag
potatoes
5 lb.
$.45 per lb
peanuts
2 lb.
$1.25 per lb
seedless watermelon
1
$2.75
bread
2 loaves
$.80 per loaf

Paul has $20. Before he gets to the check-out line, he estimates the total price to make sure he has enough money. He doesn't worry about sales tax because there isn't any tax on groceries.

  • What is the estimated cost of the groceries?
  • Clearly explain or show how Paul could estimate the total price in his head to make sure he has enough money.

Write your explanation here:

 

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