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Build Bigger Rectangles is a free printable Kindergarten maths worksheet on composing a long rectangle from unit squares, aligned to Common Core standard K.G.B.6. It prints 8 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.

Set 1 of 25 · the same problems every time you open this link.

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All 25 sets ask different questions.

Build Bigger Rectangles

K.G.B.6

NameDate

Count the squares. Area =

1.
Count the squares. Area =
2.
Count the squares. Area =
3.
Count the squares. Area =
4.
Count the squares. Area =
5.
Count the squares. Area =
6.
Count the squares. Area =
7.
Count the squares. Area =
8.
Count the squares. Area =

LessonPrint · K.G.B.6 · Set 1 · free to copy for classroom use

Answer key — Build Bigger Rectangles

Set 1. Prints on its own sheet.

  1. 1.12 square units
  2. 2.20 square units
  3. 3.21 square units
  4. 4.18 square units
  5. 5.14 square units
  6. 6.27 square units
  7. 7.16 square units
  8. 8.32 square units

Questions about Build Bigger Rectangles

What does the Build Bigger Rectangles worksheet cover?

It practises composing a long rectangle from unit squares — 8 questions for Kindergarten, all on Common Core K.G.B.6: Put small shapes together to build bigger ones. The instruction to pupils is “Count the squares. Area =”, and the answer key follows on the next sheet.

Which Common Core standard does Build Bigger Rectangles practise?

CCSS.MATH.CONTENT.K.G.B.6 — K.G.B.6, in the Geometry domain for Kindergarten. The published standard reads: “Compose simple shapes to form larger shapes.” The worksheet assesses that standard rather than a paraphrase of it.

What age or grade is this worksheet for?

Build Bigger Rectangles is written for Kindergarten, typically ages 5-6. It is one of the sheets on K.G.B.6, so it suits any pupil working at that standard — including older pupils revisiting it and younger ones working ahead.

Does Build Bigger Rectangles come with an answer key?

Yes. All 8 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 Build Bigger Rectangles can I print?

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.

Is Build Bigger Rectangles free to print and photocopy?

Yes. Build Bigger Rectangles, 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.

More practice for K.G.B.6

Put small shapes together to build bigger ones.

All Kindergarten worksheets

Last reviewed 2026-09-05. Aligned to K.G.B.6 of the Common Core State Standards for mathematics.