Hidden Picture: Double Digit Addition & Subtraction

The core group of G Suite apps are docs, slides, sheets and forms. All of which I’ve used over the past 2 years.  However, I recently discovered Google Apps Scripts, a hidden gem built into the suite.  Bottom line, I can add another level of customization to my Google creations using Google app scripts.


My First Google Script Activity

When students open the spreadsheet, they’ll see 21 addition and subtraction problems.  Once an answer is calculated, students enter the sum or difference in the corresponding red box and then press enter.  At any point during the activity, a student can check their answers by pressing the button icon.


Correct answers are indicated two ways. The red box turns green and the hidden picture slowly appears.

Spreadsheet with hidden picture

The final image

Pixel Art Fish

The Catch (no pun intended)

  1.  Since the activity was created using Google Script Apps, students will have give their permission for the coding to run.  Press continue.

Dialogue Box: A script attached to this document needs your permission to run

2. Select account



3.  Select Allow

Once students click the necessary buttons, they have access to the activity.  Enjoy!

Activity Link:  Hidden Picture: Double digit addition & subtraction activity


About jgvadnais

Instructional Technology Coach. Desmos Fellow. Google Level 1 Certified. SoCal transplant. New Englander at heart. Lover of yoga, dogs, green smoothies and coffee creamer
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