Rounding hundredths to whole numbers or tenths
Round decimals with two decimal places to the nearest whole number and to one decimal place
Lesson
Set out your lesson
Round a two-place decimal to a whole number or a tenth, including a boundary crossing.
Before teaching
Use this short check, then start teaching.
Learner readiness not observed. Ask the learner to place 3.4 between 3 and 4 and identify the halfway point. Revisit rounding one-place decimals if needed.
Check learner readiness separately; the existence of a prerequisite lesson is not evidence of attainment.
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Teaching approaches
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1 approach
Round a two-place decimal to a whole number or a tenth, including a boundary crossing.
Round a two-place decimal to a whole number or a tenth, including a boundary crossing.
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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
Rounding to the Nearest 100 and 1000
Before you open · source notes
Rounding to the Nearest 100 and 1000 supports rounding hundredths to whole numbers or tenths. Not every worksheet pack.
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 explain one step of “Rounding to the Nearest 100 and 1000” in their own words.
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. “Rounding to the Nearest 100 and 1000.” 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
- Round 3.47 to the nearest whole number (3) and to 1 d.p. (3.5)
- Round 12.95 to 1 d.p. (13.0) and explain the boundary case
- Estimate 4.83 + 2.17 by rounding each to the nearest whole number
“If your child measures a length as 4.67 m, can they round it to the nearest whole metre — and also to the nearest tenth of a metre?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Fractions
- Age range
- Ages 9–13
Standards