Students estimate the total cost of all items on a typical grocery list.
Lesson Plan Explain to students that today they will learn to estimate the cost of various items on a grocery list and use these estimations to get the total estimated cost of a grocery list. Display on the overhead projector the transparency with the meanings of the words addends, approximate, estimate, and guessing. Use the chart of currency and coinage to review the relationships of pennies, nickels, dimes, quarters, and dollars. Draw a parallel between estimating the cost of an apple and estimating the cost of individual grocery items and a complete list of grocery items. Each apple cost 24 cents.