The multiples of 100
Understand that the multiples of 100 (100–900) each represent a number of hundreds with 0 tens and 0 ones
Lesson
Set out your lesson
Practise the bounded task in The multiples of 100; see exact limits before inferring broader coverage.
Before teaching
Use this short check, then start teaching.
Can count hundreds; each [100] is a bundle, not a single unit.
Exact directed source edges retained; earlier authorship is not learner attainment.
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Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
Illustrative Mathematics · Practice link — not the full lesson
Three composing/decomposing problems
Before you open · source notes
Composing and decomposing hundreds supports multiples of 100. Not every prime list.
Free, no sign-in. A teacher solution is on the same page, so use the student view with your child.
Before you openAsk the learner to compose or decompose a number using hundreds.
Opening this link does not save learning or assess mastery.
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 2026-11-12 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. “Three composing/decomposing problems.” 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
- Identify that 300 means 3 hundreds, 0 tens, 0 ones
- Place multiples of 100 on a number line to 1000
- Read and write multiples of 100 and explain their place-value structure
“Can your child explain that 700 means 7 hundreds with no tens and no ones — and show what that looks like using base-ten blocks or a drawing?”
Curriculum record
- Type
- Conceptual
- Subject
- Mathematics
- Domain
- Number Representation & Place Value
- Age range
- Ages 7–8
Standards