Your next adventure could be a moment together.
Now that you have met Pigúiça here, discover the story behind her world. See the illustrations, read the beginning and choose a book to share with your child, one page at a time.
Math riddles for kids are short puzzles you can solve in your head, count on your fingers or laugh at once you spot the trick. Here are 25 of them, each with the answer and the math explained, sorted by age, from counting paws to brain teasers for the whole family.
Read a riddle out loud, wait a moment, and only then reveal the answer: the thinking time is what teaches. If your child gets them fast, jump to the next section.
Math riddles for ages 5 and 6: counting
At this age, math still happens on fingers, and that is perfectly fine. Toys and buttons help too.
- Pigúiça has 4 paws. How many paws do Pigúiça and one more puppy have together? Answer: 8, because each dog has 4 paws and 4 + 4 = 8.
- Three little birds sit on a branch. One more lands next to them. How many birds are there now? Answer: 4, because 3 + 1 = 4.
- How many fingers are there on two hands? Answer: 10, because each hand has 5 fingers and 5 + 5 = 10.
- Pigúiça had 5 balls and hid 2 in the garden. How many balls does she have left? Answer: 3, because 5 - 2 = 3.
- How many eyes do three kittens have? Answer: 6, because each kitten has 2 eyes and 2 + 2 + 2 = 6.
- How many wheels do a bicycle and a tricycle have together? Answer: 5, because the bicycle has 2 wheels, the tricycle has 3, and 2 + 3 = 5.
Math riddles for ages 7 and 8: adding and subtracting
Now come the little stories with numbers. Kids need to picture what happened before doing the sum, which trains reading and reasoning at the same time.
- Fofuxo had 10 stickers and got 5 more. How many stickers does he have now? Answer: 15, because 10 + 5 = 15.
- There are 12 apples in a basket. The family ate 4. How many apples are left? Answer: 8, because 12 - 4 = 8.
- Leo is 7 years old. His sister is 3 years older. How old is she? Answer: 10, because 7 + 3 = 10.
- A bus had 10 passengers. At the stop, 4 got off and 3 got on. How many passengers are on the bus now? Answer: 9, because 10 - 4 = 6 and then 6 + 3 = 9.
- What number added to itself makes 8? Answer: 4, because 4 + 4 = 8.
- A week has 7 days. How many days are there in two weeks? Answer: 14, because 7 + 7 = 14.
- Emma has 6 red pencils and 5 blue ones. She gives 2 to a friend. How many pencils does Emma have now? Answer: 9, because 6 + 5 = 11 and 11 - 2 = 9.
Math riddles for ages 9 and 10: multiplying and trick questions
With times tables on the way, classic trick questions join in: the fun is spotting the trap before answering.
- A spider has 8 legs. How many legs do 3 spiders have? Answer: 24, because 3 × 8 = 24.
- A box holds 6 eggs. How many eggs are there in 5 boxes? Answer: 30, because 5 × 6 = 30.
- Four friends share 20 candies equally. How many candies does each one get? Answer: 5, because 20 ÷ 4 = 5.
- How many months of the year have 28 days? Answer: all 12, because every month has at least 28 days, and only February stops there (or at 29).
- Which is heavier: a kilo of feathers or a kilo of rocks? Answer: neither, because both weigh exactly 1 kilo.
- A shepherd had 15 sheep. All but 9 ran away. How many sheep are left? Answer: 9, because “all but 9” means that exactly 9 stayed.
- In a race, you pass the runner in second place. What place are you in now? Answer: second, because you take the place of the runner you passed and the leader is still ahead.
Family challenge: riddles for grown-ups and kids together
These five often fool adults too. Try a round where everyone makes a guess before anyone reveals the answer.
- A brick weighs 1 kilo plus half a brick. How much does the whole brick weigh? Answer: 2 kilos, because the other half of the brick must weigh 1 kilo, so the whole brick weighs 1 + 1 = 2.
- Pigúiça and her teddy bear weigh 12 kilos together. Pigúiça weighs 10 kilos more than the teddy. How much does the teddy weigh? Answer: 1 kilo, because then Pigúiça weighs 11, and 11 + 1 = 12 with a difference of 10 (the quick guess, 2 kilos, would give 2 + 12 = 14).
- In a family there are 3 brothers, and each of them has one sister. How many children are in the family? Answer: 4, because there are 3 boys and only 1 girl, the same sister for all three.
- What comes next: 2, 4, 8, 16...? Answer: 32, because each number is double the one before and 16 + 16 = 32.
- How many times can you subtract 5 from 25? Answer: only once, because after the first time you are subtracting 5 from 20, not from 25.
Tips for using math riddles at home
Make it a quick game. One riddle at breakfast, another on the way to school. A few minutes a day go further than an afternoon of worksheets.
Ask for the reasoning, not just the number. Asking “how did you figure it out?” shows whether your child understood or guessed, and helps them put their thinking into words.
Let your child invent the next one. Making up a riddle means knowing the answer first, which is great practice on its own.
If your family enjoyed these, try our games that teach math without feeling like homework and the logic puzzles for kids, which use the same kind of thinking. For a break between riddles, Pigúiça’s game runs free in the browser, with no sign-up and no ads.
Frequently asked questions
At what age can kids start solving math riddles?
As soon as they can count to 10, they can play with the simplest riddles about paws and fingers. If a riddle frustrates them, swap it for an easier one and try again another day.
What should I do when my child gets the answer wrong?
Don’t correct right away. Ask them to explain how they thought about it: often the mistake is in the reading, not the math. Read the question again, slowly, and let them find the way on their own.
Do math riddles help at school?
They practice mental math, careful reading of a problem and the patience to think before answering, all things kids use in class every day. They don’t replace school, but they make math feel lighter at home. And if you want a story to read after the game, the book Dogavios takes Pigúiça and Fofuxo into the Magic Garden.
Your next adventure could be a moment together.
Now that you have met Pigúiça here, discover the story behind her world. See the illustrations, read the beginning and choose a book to share with your child, one page at a time.
Your next adventure could be a moment together.
Now that you have met Pigúiça here, discover the story behind her world. See the illustrations, read the beginning and choose a book to share with your child, one page at a time.
