A Ten Is Ten Ones
Understand that 10 can be thought of as a bundle of ten ones — called a 'ten'
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A Ten Is Ten Ones means bundling ten ones as one ten. We will fill a ten-frame, rename the bundle, then check a fresh set.
Spend about 12 minutes bundling ten ones into one ten, then checking a new bundle.
Explain ten as a conserved group of ten ones.
Explain ten as a conserved group of ten ones.
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Start practiceTen is ten ones practice
Rename ten ones as one ten.
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Learning resources
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Illustrative Mathematics · Practice link — not the full lesson
Roll & Build
Before you open · source notes
Partners roll digits, build a two-digit number with tens materials, then say how many tens and ones. This is a place-value supplement for thinking of ten ones as one ten, not every two-digit skill.
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Before you openAsk the learner to show the tens rod or bundle and the leftover ones. One game round does not prove every two-digit reading.
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Source, access and review notes
Public Illustrative Mathematics task page. The .html address responds HTTP 308 to this URL. An anonymous GET of this URL on 2026-11-11 returned HTTP 200 with no login or payment prompt. Where a teacher solution is present, it is on the same page as the student task; this check did not find a separate locked student view. An adult can use the student view section and should not read a solution aloud. Advertising was not observed in the fetched HTML text; that is not a browser, device, or ad-free guarantee. This is a paper or discussion task, not an automatically marked interactive game. Opening the link does not save practice or assess mastery. Diagrams on the page use missing or filename-only alt text, so they are not an accessible image equivalent. Accessibility still depends on an adult describing the picture.
Illustrative Mathematics. “Roll & Build.” Licensed CC BY-NC-SA 4.0. External task; Gakuva does not copy, host, embed, or redistribute it.
CC BY-NC-SA 4.0 — link only
Check understanding
- Group 10 single cubes into one rod of 10 and explains why
- Explain that 10 ones is the same as 1 ten
- Exchange 10 ones for a single tens block
“Can your child explain that ten single objects bundled together make 'one ten' — and that this is why we write 10 with a 1 in the tens place and a 0 in the ones place?”
Curriculum record
- Type
- Conceptual
- Subject
- Mathematics
- Domain
- Number Representation & Place Value
- Age range
- Ages 6–7
Standards