When subtracting ten from a 2 digit number, 2nd graders should be able to compute the answer as fluently and comfortably as do when they add ten to a 2 digit number.

This task challenges a student to demonstrate fluency in adding and subtracting whole numbers.

This lesson will give students practice with adding and subtracting money using a calculator. It will provide them an opportunity to determine savings using a store coupon, and determine the change they should recieve when making...

Using dimes to make change is another way to work with subtracting tens within 100.

In groups of two or three, students decide on what to order at a pizza place given a set budget and a menu.