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Which Attribute Matters? is a free printable Grade 1 math worksheet on distinguishing defining from non-defining attributes, aligned to Common Core standard 1.G.A.1. It prints 10 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 24 of 25 · the same problems every time you open this link.

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One paper per student

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Which Attribute Matters?

1.G.A.1

NameDate

Write yes or no.

1.A square is turned upside down. Is it still a square?
2.A rectangle is turned on its side. Is it still a rectangle?
3.A square has one corner cut off. Is it still a square?
4.A triangle has one more side added. Is it still a triangle?
5.A triangle has one corner cut off. Is it still a triangle?
6.A rectangle has one corner cut off. Is it still a rectangle?
7.A square has one side taken away. Is it still a square?
8.A rectangle is colored red. Is it still a rectangle?
9.A hexagon is turned upside down. Is it still a hexagon?
10.A rectangle is made much bigger. Is it still a rectangle?

LessonPrint · 1.G.A.1 · Set 24 · free to copy for classroom use

Answer key — Which Attribute Matters?

Set 24. Prints on its own sheet.

  1. 1.yes
  2. 2.yes
  3. 3.no
  4. 4.no
  5. 5.no
  6. 6.no
  7. 7.no
  8. 8.yes
  9. 9.yes
  10. 10.yes

Last reviewed 2026-09-05. Aligned to 1.G.A.1 of the Common Core State Standards for Mathematics.