Riddles for 5th Graders With Answers
Updated · Best Riddles With Answers editorial team
Quick answer: This page offers 42 riddles for 5th graders, with answers and the working shown for each number puzzle. They cover science words, language, maths and logic, and suit ten and eleven-year-olds who like to reason things out. Use them as bell-ringers, brain breaks, early-finisher activities or friendly family challenges.
Easy Riddles For 5th Graders
I am the invisible force that pulls everything toward the centre of the Earth, so you stay on the ground. What am I?
Gravity.
I am found in the ocean and in your kitchen. I make food taste better and I leave white crystals when seawater dries. What am I?
Salt.
I am melted rock that flows out of a volcano and cools into new ground. What am I?
Lava.
I am the smallest unit of life. Every plant and animal is built from me. What am I?
A cell.
I am the blanket of gases around the Earth that you breathe in. What am I?
The atmosphere.
I am a solid shape with six equal square faces, like a die. What shape am I?
A cube.
I am the corner of a square, and I measure exactly 90 degrees. What am I?
A right angle.
I am an old story about gods and heroes that explains how the world works. I am not true, but people told me for centuries. What am I?
A myth.
Words like 'two' and 'too' sound the same but are spelled differently. What do we call words like that?
Homophones.
I am a word that names a person, a place or a thing. What part of speech am I?
A noun.
I am an imaginary line around the middle of the Earth, halfway between the poles. What am I?
The equator.
What letter can you find in the middle of nowhere?
The letter H. Count the letters in n-o-w-h-e-r-e.
Trickier Riddles For 5th Graders
I am a two-digit number. My digits add up to 9, and if you reverse my digits the new number is 27 bigger than me. What number am I?
36. The digits add to 9, and 63 - 36 = 27.
It takes 5 machines 5 minutes to make 5 toys. How long would it take 100 machines to make 100 toys?
5 minutes. Each machine makes one toy in 5 minutes.
A pen and a ruler cost 110 cents together. The pen costs 100 cents more than the ruler. How much is the ruler?
5 cents. Then the pen is 105 cents, and 105 + 5 = 110.
A lily pad on a lake doubles in size every day. It takes 48 days to cover the whole lake. On which day was the lake half covered?
Day 47, because one more doubling covers the whole lake.
Half of me plus 5 is 12. What number am I?
14. Half of 14 is 7, and 7 + 5 = 12.
How many times does the digit 9 appear when you write every whole number from 1 to 100?
20. Ten numbers end in 9 (9, 19, ... 99) and ten have 9 in the tens place (90 to 99).
A snail climbs 3 metres up a 10 metre wall each day and slides back 2 metres each night. On which day does it reach the top?
Day 8. After 7 days it is at 7 metres, and on day 8 it climbs 3 more to reach 10.
You are in a race and you overtake the person in second place. What place are you in now?
Second. You took the second-place spot.
A farm has chickens and cows. Together they have 20 heads and 56 legs. How many chickens are there?
12 chickens and 8 cows. 12 x 2 = 24 and 8 x 4 = 32, and 24 + 32 = 56.
What number comes next? 2, 3, 5, 7, 11, ...
13. These are the prime numbers in order.
What number comes next? 1, 3, 7, 15, 31, ...
63. Each term is double the one before, plus 1.
A rectangle has a perimeter of 20 cm and a length of 6 cm. How wide is it?
4 cm, because 2 x (6 + 4) = 20.
Hard Riddles For 5th Graders
A man is found dead in an empty field, holding an unopened package. There is no one else around. What was in the package?
A parachute that failed to open.
A man lives on the 20th floor. Each day he rides the lift to the ground floor. On the way home he rides to the 12th floor and walks the rest, unless it is raining, when he rides all the way. Why?
He is too short to reach the button for the 20th floor, but on rainy days he has an umbrella to press it.
Why can a man living in Mexico not be buried in Canada?
Because he is still alive.
The more of me there is, the less you see. What am I?
Darkness.
Three switches outside a closed closet control one bulb inside. You can open the door only once. How do you find the right switch?
Turn on switch 1 for a few minutes, switch it off, turn on switch 2, then open the door. If the bulb is lit it is 2, if warm but off it is 1, and if cold and off it is 3.
Two guards stand at two doors. One always lies and one always tells the truth. One door is safe. You may ask one question to one guard. What do you ask?
Ask either guard: Which door would the other guard say is safe? Then pick the opposite door.
What number is missing? 8, 16, 24, ?, 40
32. The numbers go up by 8 each time.
A man is caught in a rainstorm with no hat and no umbrella, yet not a hair on his head gets wet. How?
He is bald.
A father is four times as old as his son. In 20 years he will be twice as old as his son. How old are they now?
The son is 10 and the father is 40. In 20 years they will be 30 and 60.
Each of four sisters has exactly one brother. How many children are in the family?
Five: four sisters and one brother, who is shared.
Quick-Fire Riddles For 5th Graders
I am the longest side of a right triangle, and I sit opposite the right angle. What am I?
The hypotenuse.
What can you break without ever touching it or dropping it?
A promise.
I am flat and even, and I read the same forward and backward. What word am I?
Level.
What English word has three sets of double letters in a row?
Bookkeeper.
What river has four eyes but cannot see?
The Mississippi, with four letter i's.
Using the digits 1, 2 and 3 once each, what is the biggest number you can make?
321.
What letter appears once in a minute, twice in a moment, and never in a thousand years?
The letter M.
What comes at the end of everything?
The letter G.
How to Use These Riddles
Fifth graders enjoy proving how they got an answer. For each number riddle, ask for the working before revealing the result. Many of these puzzles have a tempting wrong answer, such as 10 cents for the pen and ruler, so checking the arithmetic is the real lesson.
For the harder logic puzzles, let pairs argue for two minutes before taking answers. Ask what extra facts they would like to know. Learning to ask good questions is the same skill used in science investigations and in solving real problems.
Frequently Asked Questions
What level are riddles for 5th graders?
They sit between simple object riddles and teen brain teasers. Expect multi-step number puzzles, language tricks and logic situations where the first idea is usually wrong but a careful look reveals the answer.
Why do riddles help children think better?
Riddles teach children to question the obvious answer, test ideas, and check their reasoning. These are habits used in maths, reading and science, and a riddle makes practising them enjoyable.
How can teachers use riddles in class?
Use one as a daily bell-ringer, a transition between lessons, or a team competition. Linking a riddle to the topic, such as a science word riddle before a lesson, also helps recall.
Do I need to explain each answer?
Yes, a short explanation helps most. A riddle is only fun if the answer feels fair, so showing the clue that points to it, or the arithmetic, helps children feel clever instead of tricked.
