Measurement Riddles: 30 Length, Weight and Time Riddles with Answers on Riddlepedia
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Measurement Riddles: 30 Length, Weight and Time Riddles with Answers

30 riddles · tap Hint or Answer to reveal

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Every time you check how tall you’ve grown, weigh a bag of apples or count down the minutes to recess, you’re measuring something. Measurement riddles turn those everyday units into puzzles: how many inches hide in a yard, which is heavier, and why a “light-year” isn’t about time at all.

These 30 measurement riddles come in three rounds. The easy round covers the units every kid meets first, like feet, hours and kilometers. The medium round has US customary and metric units side by side, and the tricky round has conversions, odd old units and a couple of classic trick questions. Every number in the answers has been checked, and the working is shown.

Easy Measurement Riddles

I’m made of 12 inches. You have two of me at the ends of your legs, but I’m also a unit for measuring length. What am I?

Hint
You stand on them.
Answer
A foot

I’m 3 feet long. Football fields are measured in me, and fabric stores sell cloth by me. What am I?

Hint
It’s also a word for the grassy space behind a house.
Answer
A yard

I have a foot but no legs, and 12 inches but no toes. You’ll find me in your pencil case. What am I?

Hint
I’m straight, flat and covered in little lines.
Answer
A ruler

Step on me and I’ll tell you how heavy you are. Put apples on me in the grocery store and I’ll weigh them too. What am I?

Hint
Fish have them too, but mine are for weighing.
Answer
A scale

I’m made of 60 minutes. A school day is about six or seven of me. What am I?

Hint
Clocks have a short hand that points to me.
Answer
An hour

I measure how hot or cold something is, in degrees. A nurse might put me under your tongue. What am I?

Hint
My name starts with “thermo,” which means heat.
Answer
A thermometer

I’m 1,000 meters long. Runners race 5 of me in a “5K.” What am I?

Hint
The “K” in 5K is a short way to write me.
Answer
A kilometer

Which is longer: a meter or a yard?

Hint
Hold a meter stick next to a yardstick.
Answer
A meter. A meter is about 39.4 inches, and a yard is 36 inches.

How many months of the year have 28 days?

Hint
Read the question very carefully.
Answer
All 12 of them. Every month has at least 28 days.

I’m 100 years long. The year 2001 started a new one of me. What am I?

Hint
In sports, 100 runs or points is sometimes called by this name too.
Answer
A century

Medium Measurement Riddles

How many inches are in 1 yard?

Hint
A yard is 3 feet, and each foot is 12 inches.
Answer
36 inches. 3 × 12 = 36.

How many centimeters are in 1 meter?

Hint
“Centi” means one hundredth, like a cent is one hundredth of a dollar.
Answer
100 centimeters

I’m a little word part. Put me in front of “gram” or “meter,” and it means 1,000 of them. What am I?

Hint
I start with K.
Answer
Kilo

Four quarts of milk pour into one of me. You’ll see me in the dairy aisle as a big jug. What am I?

Hint
My name starts with G.
Answer
A gallon

How many ounces are in 1 pound?

Hint
It’s the same as the number of cups in a gallon.
Answer
16 ounces

At what temperature on the Fahrenheit scale does water freeze?

Hint
It’s not 0. It’s the number of teeth in a full adult set, wisdom teeth included.
Answer
32 °F. That’s the same as 0 °C.

A recipe says 6 teaspoons of sugar, but you only have a tablespoon. One tablespoon is 3 teaspoons. How many tablespoons do you need?

Hint
How many 3s fit into 6?
Answer
2 tablespoons. 6 ÷ 3 = 2.

Recess lasts half an hour, and lunch lasts a quarter of an hour. How many minutes is that altogether?

Hint
Half an hour is 30 minutes.
Answer
45 minutes. 30 + 15 = 45.

Horses are measured from the ground to their shoulders in this unit. It’s exactly 4 inches, about as wide as a grown-up’s palm. What is it?

Hint
You have two of them.
Answer
A hand

A small paper clip weighs about one of me. What metric unit am I?

Hint
A kilo of me is 1,000 of me.
Answer
A gram

Tricky Measurement Riddles

How many feet are in 1 mile?

Hint
It’s 1,760 yards, and each yard is 3 feet.
Answer
5,280 feet. 1,760 × 3 = 5,280.

Which is heavier: a kilogram of feathers or a pound of bricks?

Hint
This is not the classic trick. Compare a kilogram with a pound.
Answer
The kilogram of feathers. 1 kilogram is about 2.2 pounds.

About how many kilometers are in 1 mile?

Hint
A mile is longer than a kilometer, but not twice as long.
Answer
About 1.6 kilometers (1.609)

A snail crawls 2 inches every minute. If it keeps going for a whole hour, how many feet does it travel?

Hint
First find the inches, then turn them into feet.
Answer
10 feet. 2 × 60 = 120 inches, and 120 ÷ 12 = 10.

In the United States I’m 2,000 pounds. My metric cousin, spelled with two extra letters, is 1,000 kilograms, a bit over 2,200 pounds. What am I?

Hint
The metric cousin is spelled “tonne.”
Answer
A ton

Sailors measure how deep the water is in me. I’m 6 feet, about the length of a grown-up’s arms stretched wide. What am I?

Hint
My name starts with “fath.”
Answer
A fathom

Despite the word “year” in my name, I’m not a measure of time. I’m how far light travels in one year. What am I?

Hint
Astronomers use me to measure the distance to stars.
Answer
A light-year

Build a hollow cube that is 10 centimeters long, wide and tall. Fill it with water. How much water does it hold?

Hint
10 × 10 × 10 = 1,000 cubic centimeters. Which metric unit for liquid is that?
Answer
1 liter

How much dirt is in a hole that is 2 feet long, 2 feet wide and 2 feet deep?

Hint
What makes it a hole?
Answer
None. A hole is empty.

How many minutes are in one whole day?

Hint
Multiply the hours in a day by the minutes in an hour.
Answer
1,440 minutes. 24 × 60 = 1,440.

Measurement Games for the Classroom

  • Guess and check: before reading a riddle with a number answer, everyone writes down a guess. Then measure or work it out together and see who came closest.
  • Body rulers: after the hand and fathom riddles, measure the desk in hands and the hallway in “kid fathoms,” then compare with a real ruler and yardstick.
  • Unit relay: teams take turns answering. A right answer earns a paper “inch,” and the first team to build a whole foot (12 inches) wins.
  • Write your own: students pick one unit and write a “What am I?” riddle about it, with one true fact and a hint that doesn’t give it away.

Want more math puzzles? Try our math brain teasers, these science riddles or our riddles about clocks.