Counting 1-20

Master counting forward from 1 to 20! This interactive activity helps first graders build confidence with larger number sequences and understand the patterns in teen numbers. By practicing counting from any starting point, kids develop strong number sense for Grade 1 math.

Practice these skills:

• Count forward in sequence from 1 to 20
• Fill in missing numbers in counting sequences
• Count forward starting from any number (not just 1)
• Recognize patterns in teen numbers (11–19)
• Understand that teen numbers are “ten plus more” (13 = 10 + 3)

How it works: Look at the number sequence, find the missing numbers, and drag them into the correct spots. You’ll get instant feedback on every answer!

Tips for success: For numbers 11–20, think “ten plus…” — like 14 is “ten plus four.” This helps you remember the order!

Aligned with U.S. Grade 1 Math Standards (1.NBT.A.1).