Grade 1 Math · Data

Sort by one attribute

Sort objects by colour or shape and spot the one that does not belong to the group. Unlimited questions, five difficulty levels, and a full worked solution every time — free.

Practice this skill Curriculum: G1-D1.1

Try one

Three of these things are the same colour (red). Which one does NOT belong?

  • green star
  • red star
  • red triangle
  • red circle

Answer: green star

See one solved, step by step

Three of these things are the same colour (purple). Which one does NOT belong?

  • purple square
  • purple diamond
  • purple triangle
  • green square
📘 Worked solution
1purple diamond, purple triangle, purple squareThese three all have the same colour: purple.
2green squareThis one is different — its colour is green, not purple.
3Answer: green squareIt is the one that breaks the pattern the other three share.

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