---
title: "A Hundred Is Ten Tens"
description: "Understand that 100 can be thought of as a bundle of ten tens, called a 'hundred'"
canonical: https://lightmysky.com/learn/mathematics/a-hundred-is-ten-tens-mt_8gy7uxRlF6
source: https://lightmysky.com/learn/mathematics/a-hundred-is-ten-tens-mt_8gy7uxRlF6.md
retrieved: 2026-10-19
---

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# A Hundred Is Ten Tens

Understand that 100 can be thought of as a bundle of ten tens, called a 'hundred'

Subject: Mathematics · Area: Number Representation & Place Value · Ages 7 to 8
Page: https://lightmysky.com/learn/mathematics/a-hundred-is-ten-tens-mt_8gy7uxRlF6

## Ready when they can

- Explain that 10 groups of 10 ones make 100
- Bundle ten tens sticks into one hundred and describe what happened
- Represent 100 using base-ten blocks showing 10 tens

## Lesson: Ten tens make a hundred

You already know that ten ones bundled together make one ten. Now bundle again. Take ten of those ten-bundles and put them all together. That big bundle gets a new name: a hundred.

*(drawing: Count every dot: 10 rows with 10 dots in each row. That is 100 dots in all.)*

**Example.** Omar has ten bags. Each bag has ten pretzels. He pours all ten bags into one big bowl. Now the bowl has one hundred pretzels, because ten tens make a hundred.

**Tip.** When you write 100, the 1 sits in the hundreds spot. The two zeros mean there are no extra tens and no extra ones left over, just one full hundred.

**Recap.** Ten tens bundled together make one hundred, which is why 100 has a 1 in the hundreds place and two zeros after it.

## Practice

18 questions on this page, each with its working shown.

## Needs first

- [A Ten Is Ten Ones](https://lightmysky.com/learn/mathematics/a-ten-is-ten-ones-mt_r0VXbfAmsH)
- [The two digits of a two-digit number](https://lightmysky.com/learn/mathematics/the-two-digits-of-a-two-digit-number-mt_THl9GLxwoL)

## Opens up

- [The three digits of a three-digit number](https://lightmysky.com/learn/mathematics/the-three-digits-of-a-three-digit-number-mt_aPBzD28_mT)
- [The multiples of 100](https://lightmysky.com/learn/mathematics/the-multiples-of-100-mt_R2ccrI-nKD)