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Words to Expanded Form is a free printable Grade 2 math worksheet on turning a number name into expanded form, aligned to Common Core standard 2.NBT.A.3. It prints 10 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

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All 25 sets ask different questions.

Words to Expanded Form

2.NBT.A.3

NameDate

Write each number in expanded form.

1.Write "five hundred twenty-one" in expanded form.
2.Write "one hundred sixty-one" in expanded form.
3.Write "eight hundred fifty" in expanded form.
4.Write "six hundred twenty-three" in expanded form.
5.Write "seven hundred sixty-three" in expanded form.
6.Write "eight hundred seventy-five" in expanded form.
7.Write "eight hundred six" in expanded form.
8.Write "three hundred sixty-five" in expanded form.
9.Write "three hundred seventy-six" in expanded form.
10.Write "six hundred two" in expanded form.

LessonPrint · 2.NBT.A.3 · Set 1 · free to copy for classroom use

Answer key — Words to Expanded Form

Set 1. Prints on its own sheet.

  1. 1.500 + 20 + 1
  2. 2.100 + 60 + 1
  3. 3.800 + 50
  4. 4.600 + 20 + 3
  5. 5.700 + 60 + 3
  6. 6.800 + 70 + 5
  7. 7.800 + 6
  8. 8.300 + 60 + 5
  9. 9.300 + 70 + 6
  10. 10.600 + 2

Questions about Words to Expanded Form

What does the Words to Expanded Form worksheet cover?

It practices turning a number name into expanded form — 10 questions for Grade 2, all on Common Core 2.NBT.A.3: Read and write numbers up to 1,000 in digits, in words and in expanded form. The instruction to students is “Write each number in expanded form”, and the answer key follows on the next sheet.

Which Common Core standard does Words to Expanded Form practice?

CCSS.MATH.CONTENT.2.NBT.A.3 — 2.NBT.A.3, under Number & Operations in Base Ten for Grade 2. The published standard reads: “Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Words to Expanded Form is written for Grade 2, typically ages 7-8. It is one of the sheets on 2.NBT.A.3, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.

Does Words to Expanded Form come with an answer key?

Yes. All 10 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.

How many different versions of Words to Expanded Form can I print?

25 — one per student, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.

Is Words to Expanded Form free to print and photocopy?

Yes. Words to Expanded Form, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.

More practice for 2.NBT.A.3

Read and write numbers up to 1,000 in digits, in words and in expanded form.

All Grade 2 worksheets

Last reviewed 2026-09-05. Aligned to 2.NBT.A.3 of the Common Core State Standards for Mathematics.