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Logic puzzles for 8–10 year olds

12 free printable detective logic puzzles chosen for 8–10 year olds (Class 3 to 5 (Year 3–5, grades 3–5)), easiest first, each with an answer key. Print the whole set, or open any one to play it on screen.

Ages 4–5 Ages 6–7 Ages 8–10

Happy Detective Case #1: printable logic puzzle, level 4, ages 8–10
Happy Detective Case #1Level 4 · about 15 minPlay or print · Answer
Rocket Detective Case #21: printable logic puzzle, level 4, ages 8–10
Rocket Detective Case #21Level 4 · about 15 minPlay or print · Answer
Golden Detective Case #41: printable logic puzzle, level 4, ages 8–10
Golden Detective Case #41Level 4 · about 15 minPlay or print · Answer
Super Detective Case #61: printable logic puzzle, level 4, ages 8–10
Super Detective Case #61Level 4 · about 15 minPlay or print · Answer
Bright Detective Case #81: printable logic puzzle, level 4, ages 8–10
Bright Detective Case #81Level 4 · about 15 minPlay or print · Answer
Starry Detective Case #101: printable logic puzzle, level 4, ages 8–10
Starry Detective Case #101Level 4 · about 15 minPlay or print · Answer
Cosmic Detective Case #121: printable logic puzzle, level 4, ages 8–10
Cosmic Detective Case #121Level 4 · about 15 minPlay or print · Answer
Rocket Detective Case #141: printable logic puzzle, level 4, ages 8–10
Rocket Detective Case #141Level 4 · about 15 minPlay or print · Answer
Lucky Detective Case #1: printable logic puzzle, level 5, ages 8–10
Lucky Detective Case #1Level 5 · about 20 minPlay or print · Answer
Brave Detective Case #37: printable logic puzzle, level 5, ages 8–10
Brave Detective Case #37Level 5 · about 20 minPlay or print · Answer
Quick Detective Case #73: printable logic puzzle, level 5, ages 8–10
Quick Detective Case #73Level 5 · about 20 minPlay or print · Answer
Starry Detective Case #109: printable logic puzzle, level 5, ages 8–10
Starry Detective Case #109Level 5 · about 20 minPlay or print · Answer

How to help a 8–10 year old with detective logic puzzles

Read the clues like a detective and use the grid to work out who has what. Logic grid puzzles teach children to reason step by step and to rule things out. At this age they mainly build deduction, reading carefully and ruling out.

Bigger cases need several passes through the clues. Ask your child which clue helped most and why.

Ten minutes a day is plenty. Stop while it is still fun, and praise the effort (“you kept going after that dead end”) more than the speed.

Questions parents ask

What is a logic grid puzzle?

A short mystery with clues and a grid. Children mark what must be true and what cannot be true until only one answer is left.

What age can start logic puzzles?

With help, 5 and 6 year olds can do small cases. Most 8 year olds can solve them alone.

Is there only one answer?

Yes. Each case is checked by computer to have exactly one solution, shown in the answer key.

More free puzzles: the full library of 10,000+ · all detective logic puzzles by age

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