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Overview
Grade 1
Number
4. Represent and describe numbers to 20 concretely, pictorially and symbolically
4.5 Numeral expanding up to 99
Numeral expanding up to 99
What You'll Learn
Recognize that two-digit numbers are composed of tens and ones
Identify the place value of each digit in numbers up to 99
Expand numbers by breaking them into tens and ones using addition
Convert between standard form and expanded form for two-digit numbers
What You'll Practice
1
Writing numbers from word form descriptions of tens and ones
2
Breaking two-digit numbers into their place value components
3
Adding tens and ones to form complete numbers
Why This Matters
Understanding place value and number expansion builds the foundation for all arithmetic operations. This skill helps you add, subtract, and understand larger numbers throughout your math education and everyday tasks like counting money.
This Unit Includes
1 Video lesson
Practice exercises
Skills
Place Value
Tens and Ones
Number Sense
Expanded Form
Two-Digit Numbers
PEI Curriculum Aligned