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Marie Lee

Student Instructions

Adding and Subtracting 1, 10, and 100 to 3 Digit Numbers.

Today you will practice using mental math to add 1, 10 or 100 to a 3 digit number. To get started, click the button. 1. Read the directions. 2. Use the tool to click on the blue dice to generate a 3-digit number. 3. Read your generated number out loud. 4. Use the to write the number in the middle space. 5. Read the label in the circles / squares 6. Use the to add or subtract 1, 10 or 100 to your number. 7. After you complete all 4 pages, click the green to turn in your work.

3rd Grade, 2nd Grade, Math
4 teachers like this
Compatible with: Chromebooks, computers, iPads, iPhones, Android tablets, Android phones, Kindle Fire

Students will edit this template:

Teacher Notes (not visible to students)

Teachers, this activity is a fun way to practice adding or subtracting 1, 10, or 100 to a 3 digit number. >>> add your own voice directions as needed for your particular class. * If this is the first time your students are using a number generator, you will want to model how to start and stop it. * If your students have a hard time holding a 3-digit number in their memory before writing it, you will want to model how to write the generated number on a dry erase board or scrap paper before touching the tool to write it on chart. *Once they touch the pen, their generated number will disappear. * This activity can be used multiple times since the numbers are randomly generated. You can model it with the students in a whole group lesson before having them do it on their own. *This activity can be used as a "center" activity during guided math time. ** I created the number generator on Google Slides using Kris Szajner's tutorial :)