Write numbers in expanded form
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Free printable Write numbers in expanded form worksheets for 1st grade. Students express two-digit numbers as the sum of their tens and ones values (e.g., 43 = 40 + 3), deepening place value understanding and connecting to addition. Supports the transition from concrete models to abstract notation. Part of our place value worksheets collection.
What You'll Learn
- Write two-digit numbers as tens plus ones in expanded form
- Decompose numbers to show the value of each digit
- Connect standard form numbers to their expanded notation
FAQ
What is expanded form and why is it taught in 1st grade?⌄
Expanded form breaks a number into its place value components (e.g., 56 = 50 + 6), making the value of each digit explicit and reinforcing base-ten structure.
How does writing numbers in expanded form connect to two-digit addition strategies?⌄
When students add 34 + 21, decomposing both numbers into expanded form (30+4 + 20+1) allows them to add tens and ones separately — a key 1st grade strategy.
What is a common error when students first write numbers in expanded form?⌄
Students sometimes write 56 as 5 + 6 instead of 50 + 6 — they list the digits rather than their values, which targeted place value instruction corrects.
Ratings & Reviews
3David L.
2nd Grade Teacher · Verified download
Looking forward to this! All the other ClassWeekly worksheets are excellent so I know this will be too.
Helpful · 8
Jamie T.
1st Grade Teacher · Verified download
Thanks for creating this! I'll be using it the moment it's available.
Helpful · 4
Emily W.
Homeschool parent · Verified download
Excited for this one! I've been hunting for a good printable on this topic for weeks.
Helpful · 9
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