Cut-Out Corners is a free printable Grade 3 math worksheet on finding an area by taking a missing rectangle away from a whole one, aligned to Common Core standard 3.MD.C.7. 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 students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.
Set 1 of 25 · the same problems every time you open this link.
It practices finding an area by taking a missing rectangle away from a whole one — 6 questions for Grade 3, all on Common Core 3.MD.C.7: Find area by multiplying side lengths. The instruction to students is “Work out each area”, and the answer key follows on the next sheet.
Which Common Core standard does Cut-Out Corners practice?
CCSS.MATH.CONTENT.3.MD.C.7 — 3.MD.C.7, under Measurement & Data for Grade 3. The published standard reads: “Relate area to the operations of multiplication and addition.” The worksheet assesses that standard rather than a paraphrase of it.
What age or grade is this worksheet for?
Cut-Out Corners is written for Grade 3, typically ages 8-9. It is one of the sheets on 3.MD.C.7, so it suits any student working at that standard — including older students revisiting it and younger ones working ahead.
Does Cut-Out Corners come with an answer key?
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.
How many different versions of Cut-Out Corners can I print?
25 — one per student, 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.
Is Cut-Out Corners free to print and photocopy?
Yes. Cut-Out Corners, 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.