Decimals to three places
Solve problems involving numbers with up to three decimal places
Lesson
Set out your lesson
“Decimals to three places means practising the idea at the table with counters or paper models and one clear check. We will demo once, then your child tries.”
Bring to the table
- Place-value grid (ones / tenths)
- Pencil
Extra for the adult
Worked example. Three tenths on the grid is 0.3.
Optional challenge. For Decimals to three places, add one harder example after success.
What to notice. Keep one parent note: examples tried; results; support used. This session samples Decimals to three places, not mastery.
Share and support
Family records and proof options
Keep a record of your learning
Save photos, notes, and attendance. Export a proof packet for compliance or portfolio reviews.
Practice this concept
Start practiceDecimals to three places practice
Practice key ideas from Decimals to three places.
Free · no login · no ads · Practice answers and completion are not saved. Parent observation remains the lesson record.
Learning resources
Extra practice links — they do not replace Gakuva’s teaching approach.
Illustrative Mathematics · Practice link — not the full lesson
Placing Thousandths on the Number Line.
Before you open · source notes
Thousandths on a number line support decimals to three places. Not every fraction-to-percent conversion.
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 place one thousandths decimal on the number line.
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. “Placing Thousandths on the Number Line..” 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
- Calculate the total of three measurements: 1.234 m + 0.567 m + 2.199 m
- A bottle holds 1.5 litres; 0.375 l is poured out — how much remains?
- Find two numbers with 3 d.p. that add to make 1
“If your child is filling a tank that holds 5.000 litres and has poured in 2.375 litres, can they work out how much more is needed to fill it?”
Curriculum record
- Type
- Procedural
- Subject
- Mathematics
- Domain
- Fractions
- Age range
- Ages 9–12
Standards