Home›Lesson Plans›Mathematics›Number & Operations in Base Ten · Grade 2

Standard, Expanded, and Word Form

Second graders learn that one number can be written three ways, as digits, as its place-value parts added together, and in words, then check what they know.

Grade 2Standard, Expanded, and Word Form50 minutes1 class periodGradual ReleaseExplicit teaching4 StandardsCommon Core
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Lesson at a Glance

Everything you need before the bell rings

Learning Objectives

Students will be able to…

  • ✓Write standard form.
  • ✓Break a number into expanded form.
  • ✓Write word form.
  • ✓Check what you know.
Essential Question

The number 253 can be written as 253, as 200 + 50 + 3, or as two hundred fifty-three. They all mean the same amount. Why write a number three ways?

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Lesson Phases
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Vocabulary Terms
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Standards Aligned
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Interactive Task
Model · Interactive Tool

Number Forms Check

Project this and answer each question about standard, expanded, and word form — read the explanation after each one.

🔢 Check what you know about number formsTry it
Answer each question about standard, expanded, and word form.
The Lesson · Gradual Release (I Do · We Do · You Do)

50 minutes, five moves

Tap any phase to open the teacher moves and student actions.

1

Hook — One Number, Three Ways

5 min

The number 253 can be written as 253, as 200 + 50 + 3, or as two hundred fifty-three. They all mean the same amount. Why write it three ways?

👩‍🏫 Teacher Moves

  • Show 253 three ways.
  • Ask what is the same.
  • Set the goal.

🎒 Student Actions

  • Think.
  • Share.
  • Get ready.
2

Use — Number Forms Check

12 min

Students answer questions about the three forms.

👩‍🏫 Teacher Moves

  • Send students to the Number Forms Check.
  • Answer each question.
  • Read the why.

🎒 Student Actions

  • Answer.
  • Check.
  • Read it.
3

Modify — Switch the Form

13 min

Students rewrite a number in each form.

👩‍🏫 Teacher Moves

  • Start with a three-digit number.
  • Write its expanded form.
  • Write its word form.

🎒 Student Actions

  • Start.
  • Expand.
  • Spell.
4

Create — My Number Poster

15 min

Students show a number three ways.

👩‍🏫 Teacher Moves

  • Pick a three-digit number.
  • Write all three forms.
  • Draw base-ten blocks for it.

🎒 Student Actions

  • Pick.
  • Write.
  • Draw.
5

Reflect — Same Amount, Different Looks

5 min

Students reflect on number forms.

👩‍🏫 Teacher Moves

  • What is expanded form?
  • How do you write 140 in word form?
  • Complete the exit ticket.

🎒 Student Actions

  • Say it.
  • Say it.
  • Complete the exit ticket.
Standards Alignment

Built to the standards you report on

Aligned to the Common Core State Standards for Mathematics.

CCSS
2.NBT.A.3

Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

CCSS
2.NBT.A.1

Understand that the digits of a three-digit number represent hundreds, tens, and ones.

CCSS
4.NBT.A.2

Read and write multi-digit whole numbers using numerals, names, and expanded form.

CCSS
MP.7

Look for and make use of structure.

Differentiation

One lesson, every learner

Multilingual Learners

ELL / EMERGING READERS
  • Place-value block cards.
  • Sentence frame: “___ in expanded form is ___ .”
  • Answer one question at a time.

Support & Access

IEP / 504
  • Start with two-digit numbers.
  • Build the number with base-ten blocks.
  • Review one question at a time.

Stretch & Extend

GIFTED / EARLY FINISHERS
  • Write four-digit numbers in all three forms.
  • Catch the zero-as-placeholder trick.
  • Explain why expanded form shows place value.
Materials

What to gather

  • 📽️Projector / board
  • 🧮Base-ten blocks
  • 💻Number Forms Check
  • 🖼️Place-value cards
  • ✏️Pencils
  • 🎫Exit-ticket slips
Vocabulary

Key terms — hover for a quick definition

standard forma number written with digits, like 253expanded forma number written as its place-value parts added, like 200 + 50 + 3word forma number written in words, like two hundred fifty-threeplace valuethe value a digit has because of its place in the numberdigitany of the symbols 0 through 9hundreds placethe third place from the right, worth groups of 100tens placethe second place from the right, worth groups of 10ones placethe first place from the right, worth single units
Evaluate

Exit Ticket

Preview the three formative checks. Tap “Sample answer” to see what mastery looks like — hide them before you print for students.

QUESTION 1
What is expanded form?
A number written as its place-value parts added together, such as 200 + 50 + 3 for 253.
QUESTION 2
How do you write 140 in word form?
One hundred forty.
QUESTION 3
Write 600 + 0 + 5 in standard form.
605, with a zero holding the tens place.

Create: my number poster.

Have students pick a three-digit number, write all three forms, and draw base-ten blocks for it, so the forms connect to real place value. A printable number-forms worksheet is in the Mathematics library.

Study · Flashcards

Study the key terms

Tap a card to flip it, then rate whether you knew it. Built from this lesson’s vocabulary.

🃏 Standard, Expanded, and Word FormFlip
Card 1
Term
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Meaning
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Practice · Quiz

Check your understanding

A quick self-check with instant feedback, drawn from this lesson’s key terms.

📝 Standard, Expanded, and Word FormQuiz
Score: 0
1 / 6
Question 1
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Practice · Worksheet

Printable worksheet

A print-and-go review sheet with a built-in answer key. Tap “Show answer key” to reveal answers, or print the clean version for students.

🖨️ Standard, Expanded, and Word FormPrint
Name: ________________________
Date: ____________

Part A · Write the word that matches each meaning

Word bank: digit, expanded form, hundreds place, ones place, place value, standard form, tens place, word form
  1. the value a digit has because of its place in the number
  2. any of the symbols 0 through 9
  3. the second place from the right, worth groups of 10
  4. the first place from the right, worth single units
  5. a number written in words, like two hundred fifty-three
  6. the third place from the right, worth groups of 100
  7. a number written with digits, like 253
  8. a number written as its place-value parts added, like 200 + 50 + 3

Part B · Show what you learned

  1. What is expanded form?
  2. How do you write 140 in word form?
  3. Write 600 + 0 + 5 in standard form.
Answer key — Part A: 1) place value · 2) digit · 3) tens place · 4) ones place · 5) word form · 6) hundreds place · 7) standard form · 8) expanded form
Part B: 1) A number written as its place-value parts added together, such as 200 + 50 + 3 for 253. 2) One hundred forty. 3) 605, with a zero holding the tens place.