Lesson 6 – Adding and Subtracting to Compare

To encourage students to have fun on the Web while learning about Adding and Subtracting to Compare, here are some games and interactive activities they can do on their own or in pairs.

Goal
Compare numbers using addition and subtraction.

Builds Upon
Student Book page 162

Instructions for Use

The Addition Subtraction Relationship lets students relate addition to subtraction.

To use The Addition Subtraction Relationship, click the ‘Start Addition/Subtraction Relationship’ button and read the equation in the first text field. Have students click the button to indicate if the answer is correct.

The Subtraction Addition Relationship lets students relate subtraction to addition.

To use The Subtraction Addition Relationship, click the ‘Start Subtraction/ Addition Relationship’ button and read the equation in the first text field. Have students click the button to indicate if the answer is correct.

How Many to Get to 100? prompts students to use mental math to solve an addition equation.

To use How Many to Get to 100?, have students input the answers in the text fields. At each text field, the user is prompted by a question. Input the answer and press ‘Enter’. After the questions have been answered correctly, note the equations at the bottom of the screen that show the relationship between the addition and subtraction equations. Press the ‘Again’ button to begin a new question.