Fractions on a Number Line — Thirds and Sixths is a free printable Grade 3 maths worksheet on locating thirds and sixths, aligned to Common Core standard 3.NF.A.2. It prints 6 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two pupils in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.
3.NF.A.2
Read the number line.
LessonPrint · 3.NF.A.2 · Set 1 · free to copy for classroom use
Set 1. Prints on its own sheet.
It practises locating thirds and sixths — 6 questions for Grade 3, all on Common Core 3.NF.A.2: Place fractions on a number line. The instruction to pupils is “Read the number line”, and the answer key follows on the next sheet.
CCSS.MATH.CONTENT.3.NF.A.2 — 3.NF.A.2, in the Number & Operations — Fractions domain for Grade 3. The published standard reads: “Understand a fraction as a number on the number line; represent fractions on a number line diagram.” The worksheet assesses that standard rather than a paraphrase of it.
Fractions on a Number Line — Thirds and Sixths is written for Grade 3, typically ages 8-9. It is one of the sheets on 3.NF.A.2, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Yes. All 6 answers are generated from the same problems as the questions, so the key cannot drift out of step with the sheet. It starts on a fresh sheet of paper, after the questions, so it is not handed out with the class by accident.
25 — one per pupil, and all 25 ask different questions. Set 1 downloads the whole class as a single PDF. Every version is fixed to its own address, so a sheet printed today holds the same problems when you reopen it next week.
Yes. Fractions on a Number Line — Thirds and Sixths, its answer key and its 25 versions are free to print and photocopy for your own class, with no account, no email capture and no subscription at the download step. Please do not resell them or republish them as your own.
Yes — “Fractions on a Number Line” is a 45-minute Grade 3 plan for 3.NF.A.2, timed section by section, with the misconceptions to expect and an exit ticket. Fractions on a Number Line — Thirds and Sixths is the practice that follows it.
Place fractions on a number line.
Teaching this next? Fractions on a Number Line is the 45-minute plan for it, with the misconceptions to expect.
Last reviewed 2026-09-05. Aligned to 3.NF.A.2 of the Common Core State Standards for mathematics.