Build Numbers to 100,000

Overview

In this first lesson of the nine-part unit “Big Numbers, Real Life,” students build, identify, and read whole numbers through 100,000. They connect each digit to its place-value position using a chart, color-coded cards, base-ten representations, and spoken number names.

Learning intentions

Students will be able to:

• Build numbers through 100,000 on a place-value chart.
• Identify the value and position of a digit.
• Use base-ten blocks, arrow cards, or place-value cards to represent numbers.
• Read and say multi-digit numbers aloud.

Success criteria

• I can place digits correctly on a place-value chart.
• I can use base-ten blocks, arrow cards, or digit cards to build a number.
• I can identify the ones, tens, hundreds, thousands, and ten-thousands places.
• I can read a number aloud accurately.

Curriculum links

• Place value and base-ten understanding: recognize that a digit’s value is ten times the value of the same digit one place to its right.
• Measurement and Data: express and record quantities accurately using appropriate numerals.
• Number and Operations in Base Ten: read, represent, and explain the value of digits in multi-digit whole numbers.
• Georgia Standards of Excellence focus: build and read numbers to 100,000 using place-value relationships.

Lesson structure (30 minutes)

1. 0–3 min · Hook and connect. Open with the number-building hook slide showing a large mystery number such as 50,000 and ask, “How could we prove what each digit is worth?” Students turn and talk, then share one idea. State: “Today we are learning to build and read numbers to 100,000.”

2. 3–15 min · Mini-lesson 1: I do. Display the place-value teaching slides and model with a large place-value mat and color-coded digit cards: 100,000, 10,000, 1,000, 100, 10, and 1. Think aloud while building 47,215, emphasizing that 4 means four ten-thousands, 7 means seven thousands, and zeroes hold empty places. Students echo-read the place names and help place each digit. Briefly connect adjacent places: one thousand is ten times one hundred, and one ten-thousand is ten times one thousand.

3. 15–22 min · Mini-lesson 2: We do. Use the guided practice slides while students work in a group of seven with a pocket-chart place-value mat, counters, and digit cards. Call numbers such as 30,406, 72,150, and 85,009 one at a time. Students build each number, point to each digit as the class reads it, and explain the value of one selected digit. Pause after each example to correct reversals, skipped zeroes, or misplaced digits.

4. 22–27 min · Independent practice: You do. Distribute the number-building and matching worksheet. Students build three numbers, match each to its visual numeral card, and complete short prompts identifying a named place. Encourage students to use the place-value mat or base-ten blocks before writing. Circulate and ask, “What does this digit represent?” and “How do you know?”

5. 27–30 min · Check and close. Display the review and exit-question slide and ask students to answer independently using a response card, pointing, or writing. Use this question: “Which place is 7 in 47,215? A thousands, B hundreds, C tens.” Students show an answer and explain their choice. Revisit the success criteria and invite one student to read a number aloud.

Resources

• the number-building slide deck
• the number-building and matching worksheet
• Large place-value mat
• Pocket-chart place-value mat
• Color-coded digit cards and numeral cards
• Base-ten blocks or arrow cards
• Counters or linking cubes
• Number line
• Response cards or small whiteboards

Assessment

• During modeling, check whether each student places digits in the correct column and can name the place represented.
• During guided practice, listen for accurate reading of numbers, including numbers with zeroes as placeholders, such as 85,009.
• Review the worksheet and record responses to the exit question. Students needing support should rebuild 47,215 and explain why 7 is in the thousands place.

Differentiation

• Support: Begin with four-digit numbers, then move to five-digit numbers as students are ready. Provide a clearly labeled place-value mat, larger high-contrast cards, and color matching between each place and its digit card. Use hand-over-hand prompting only as needed, gradually releasing control.
• Additional support: Offer a picture-supported matching version of the number-building and matching worksheet with minimal text. Read every direction and number aloud, allow students to point to or select answers, and accept oral responses.
• EAL and communication support: Pair each place name with a visual and gesture; rehearse sentence frames such as “The ___ is in the ___ place” and “I know because ___.”
• Extension: Ask students to create a number using five different digits, place it on the chart, read it aloud, and explain the value of two digits. Invite them to create a second number with the same digits but a different value.