Missing Addend Subtraction Slides, 1st Grade Math Centers

Missing addend subtraction slides give first graders the focused, repeated practice they need to master one of the trickiest early math skills, finding the unknown number in a subtraction equation. Designed around Common Core Standard 1.OA.D.8, this set covers subtraction within 12 and works in a press-and-play format that runs itself, so no prep is needed beyond opening the file.

The slideshow displays a problem, gives students time to work out their answer on a whiteboard or work mat, then automatically reveals the correct answer before advancing to the next question. Students can jump in at any point, making it ideal as an early finisher activity, a first grade math center, or a small group intervention tool.

WHAT'S INCLUDED:

• 51-problem PowerPoint slideshow, ready to present
• Movie file version of the same slideshow, with adjustable playback speed
• QR code cards so students can access the activity independently
• Printable work mat, compatible with dry-erase whiteboards

HOW THIS WORKS:

• Open the PowerPoint or movie file and press play
• Students write their answer, then the slide reveals the correct response
• The slideshow advances automatically, keeping the pace consistent
• Early finishers join in without disrupting the flow of the activity

WHY TEACHERS LOVE IT:

• Completely no-prep and reusable across the school year
• Keeps students engaged and self-checking while instruction continues
• Aligns directly to 1.OA.D.8 for confident lesson planning
• Works for whole group, math centers, or intervention settings

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QUESTIONS OR CONCERNS:

Email me at scjuneau@yahoo.com if you have any questions or concerns about this product. Thank you for visiting my store! I sure appreciate you!

Shanon Juneau ❤️

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