Make math review engaging with Odd One Out math worksheets for kindergarten and 1st grade! Students look at four mathematical examples and decide which one doesn't belong, then explain what makes it different. This visual number sense and logic resource encourages students to notice patterns, compare representations, and explain their mathematical thinking.
 
Perfect for end-of-year kindergarten math review, beginning-of-year Grade 1 review, math talks, centers, independent practice, homework, or informal assessment.
 
📚 What's Included
This resource includes two printable PDF formats:
✏️ Student Worksheets — 12 pages
48 Odd One Out problems — 4 problems per page
Four mathematical examples in each problem
Simple layout for independent work, homework, centers, or small groups
 
🧠 Teacher Number Talk Pages — 60 pages
The same 48 problems, with one problem per page
12 bonus extension questions for warm-ups or enrichment
Designed for whole-class or small-group math discussions
 
📝 Answer keys included
🎨 Full-color resource only — no black-and-white version
 
🔢 Math Skills Covered
Students review key kindergarten and early Grade 1 number sense skills, including:
Counting to 10 and 20
Number recognition
Matching numerals and number words
Comparing quantities, numerals, and number words
Recognizing different representations of numbers.
Students work with objects, ten frames, tally marks, cubes, numerals, and number words.
 
🧠 Build Math Reasoning
The questions encourage students to look closely, make connections, and explain their reasoning rather than simply identify an answer.
 
💡 Ways to Use
Math talks and daily warm-ups
End-of-year kindergarten review
Beginning-of-year Grade 1 review
Math centers and small groups
Independent work or homework
Informal assessment
Enrichment and extension