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Kiwiland Education

Earth Day CSI Math Mystery – Addition and Subtraction Worksheets

$4.50 USD

Looking for a printable Earth Day math activity that boosts engagement and reinforces core skills? This Earth Day CSI Math Mystery – The Missing Seed Packets – is the perfect no-prep resource for reviewing addition and subtraction with your 2nd, 3rd, and 4th grade students. It's ideal for April math lessons, spring review, and the days before or after Easter or spring break.

In this fun mystery challenge, students become math detectives. They solve puzzles and eliminate suspects to uncover who stole the missing seed packets. This printable escape room–style activity combines word problems, regrouping, and math fluency with critical thinking and classroom fun—no locks, devices, or setup required!

📎 What’s Included:

  • Subtraction from 100 of 2-digit numbers
  • 3-digit addition with regrouping
  • 3-digit addition and subtraction practice
  • Multi-digit addition problems
  • Word problems (addition and subtraction)
  • Full-color and black & white worksheet sets
  • Complete answer key

This addition and subtraction CSI Math Mystery is a favorite among teachers looking for fun spring math activities, engaging Earth Day worksheets, and independent practice that actually excites students. It’s also great for math centers, enrichment groups, homework, or substitute plans. Homeschool families love it too!

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Kiwiland Education

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Earth Day math mystery worksheet set for 2nd and 3rd grade addition and subtraction review

Earth Day CSI Math Mystery – Addition and Subtraction Worksheets

$4.50

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