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Overview
Grade 1 Math
B1. Number Sense
2. B1.2 Whole Numbers
2.4 Identifying tens and ones
Identifying Tens and Ones
Discover how to split a two-digit number into groups of tens and leftover ones using pictures, charts, and easy counting steps.
What You'll Learn
Recognize that a two-digit number has a tens digit and a ones digit
Group ten single units together to make one ten block
Count leftover single units as the ones digit after grouping
Read a number such as 34 as 3 tens and 4 ones, or \( 30 + 4 \)
Use a place value chart with a tens column and a ones column to sort digits
Compare how the same digit means different amounts depending on its place
What You'll Practice
1
Counting and identifying ones in numbers up to 99
2
Counting and identifying tens in numbers up to 99
3
Reading numbers presented in word form and identifying place values
Why This Matters
Understanding tens and ones is the foundation of all number work you'll do in math. This place value skill helps you add, subtract, compare numbers, and work with money in everyday life. It's the first step toward mastering larger numbers and more complex arithmetic.
This Unit Includes
1 Video lesson
Practice exercises
Learning resources
Skills
Place Value
Tens and Ones
Number Sense
Counting
Two-Digit Numbers
ON Curriculum Aligned