Add Within 1000 — No Regrouping is a free printable Grade 3 maths worksheet on three-digit addition with no exchange, aligned to Common Core standard 3.NBT.A.2. It prints 12 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.NBT.A.2
Work out each answer.
LessonPrint · 3.NBT.A.2 · Set 1 · free to copy for classroom use
Set 1. Prints on its own sheet.
It practises three-digit addition with no exchange — 12 questions for Grade 3, all on Common Core 3.NBT.A.2: Add and subtract within 1000 confidently. The instruction to pupils is “Work out each answer”, and the answer key follows on the next sheet.
CCSS.MATH.CONTENT.3.NBT.A.2 — 3.NBT.A.2, in the Number & Operations in Base Ten domain for Grade 3. The published standard reads: “Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.” The worksheet assesses that standard rather than a paraphrase of it.
Add Within 1000 — No Regrouping is written for Grade 3, typically ages 8-9. It is one of the sheets on 3.NBT.A.2, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.
Yes. All 12 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. Add Within 1000 — No Regrouping, 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 — “Fluent Addition and Subtraction to 1000” is a 45-minute Grade 3 plan for 3.NBT.A.2, timed section by section, with the misconceptions to expect and an exit ticket. Add Within 1000 — No Regrouping is the practice that follows it.
Add and subtract within 1000 confidently.
Teaching this next? Fluent Addition and Subtraction to 1000 is the 45-minute plan for it, with the misconceptions to expect.
Last reviewed 2026-09-05. Aligned to 3.NBT.A.2 of the Common Core State Standards for mathematics.