Learning Outcomes
The Whizki Learning Number Detective worksheet strengthens number recognition accuracy from 0 to 20, helping first graders match written numerals to counted objects with confidence.
Whizki Learning counting exercises develop one-to-one correspondence by guiding children to touch and count each object once, building reliable number sequencing from 0 to 20.
The Whizki Learning comparison activities introduce relational thinking by asking learners to decide which group or numeral shows more, fewer, or equal amounts within 0–20.
Numbers & Counting
123
Learn numbers, counting, and early number sense through simple examples
Number Detective: Count and Compare 0-20
The Whizki Learning Number Detective: Count and Compare 0-20 worksheet supports first grade math readiness by guiding 6-year-old learners through structured counting and comparison practice designed by experienced elementary educators from Whizki Learning.
The Whizki Learning Number Detective worksheet boosts number sense from 0 to 20 by asking children to count colorful objects, trace numerals, and connect each quantity to the correct written number for strong visual and symbolic understanding.
The Whizki Learning Count and Compare activities build early comparison skills within the 0–20 range by inviting learners to circle groups that show more or fewer items, choose the greatest numeral, and identify equal amounts using friendly images.
The Whizki Learning printable worksheet offers flexible use for home, classroom, or tutoring sessions by providing a single-page resource that families and educators can reuse for warm-ups, centers, or quick math checkups focused on counting and number comparison.
Limited Time Sale
Kids’ Workbooks!
Boost your child’s skills with our discounted workbooks. Engaging activities for preschool, kindergarten, and grade 1 - now at special sale prices!








Fast shipping
Secure Payment
Licensed Teachers
For the planet
Printed in the USA
Find fresh ideas
To help your little learners grow!
Helpful guides for parents and teachers, and tips for making learning at home super fun.

A parent-friendly guide to number bonds to 10, with a simple chart, hands-on teaching steps, and printable practice for ages 3 to 7.
Sunny Hedge
Most 5-year-olds do not need to read yet. Learn what kindergarten children are usually working on, what counts as progress, and when to ask the teacher for input.
Sunny Hedge
A parent-friendly CVC words list sorted by short a, e, i, o, and u, with word-family groups and simple blending tips for ages 3 to 7.
Sunny Hedge
A calm guide to typical counting at age 4, why reciting numbers is different from understanding quantity, and two easy kitchen games to try today.
Sunny HedgeJoin the Screen-Free Movement.
Get exclusive activities, expert tips, and inspiration for a more meaningful, offline family life.





