Sue wants to earn exactly 33 points.
The ducks give different points.
Which is the smallest number of ducks she can take?
The pages of a book are consecutively numbered from 1 through 99.
How many digits are there in this numbering?
Four children want to share five chocolate bars so that everyone gets the same amount.
How many 1x1 pieces does each child get?
The pages of a book are consecutively numbered from 1 through 100.
How many digits are there in this numbering?
Six children want to share five chocolate bars so that everyone gets the same amount.
How many 1x1 pieces does each child get?
My friend and I have the same amount of cubes.
How many cubes do I need to give him in order to have 10 cubes fewer than him?
How many numbers are there in the English language that are spelt with the same number of letters as the number itself?
A boy is 13 years old and his mother is 31 years old, which is his age with the digits reversed.
When will the digits of their ages be the reverse of each other again?
Find the third number at the base of the pyramid if each number is the sum of the two numbers directly below it.
If you were to spell out the numbers, how far would you have to go before encountering the letter 'g'?
A driver's odometer reads 78987 before leaving on a trip.
At the end of the trip, the odometer reads 79878.
How far has the driver driven?
The gasoline tank in a car holds 17 gallons.
The car averages 25 miles to the gallon.
How many miles does the car travel with one tank of gasoline?
In London 2012, the USA won 46 gold, 28 silver and 29 bronze medals.
Great Britain was third with 29 gold, 17 silver and 19 bronze.
How many more medals did the USA win compared to Great Britain?
1991 is a number that stays the same when read backwards as when read forwards.
Which of the following numbers does not have this property?
There are 5 coins in the first pile, 8 in the second, 11 in the third, and 16 in the fourth.
Jane equally shares the coins with Gerry.
How many coins does the boy get?
This wooden hut with a rock roof in the Swiss village Mogno was built in 1651.
How old was the building in 2015?
Each of my three friends and I have the same amount of cubes.
How many cubes do I need to give them in order to have 12 cubes fewer than each of them?
Three of the numbers 2, 4, 16, 25, and 50 have a product of 800.
What is the sum of those three numbers?
I evenly divided my pieces of candy among my two friends. Each of my friends received twice as many as I kept for myself (shown in the picture).
How many pieces of candy did I have before sharing?
Two hundred and thirty two boys and two hundred and twenty nine girls came out of school at different speeds.
After a while, 38 adults rushed out of the same building even faster than the kids.
How many students and teachers went home after school?
Spotting patterns is very important.
Can you spot which number doesn't fit the pattern?
3, 6, 12, 26, 48, 96, . . .
Author: Leslie Green
Three positive whole numbers give the same result when multiplied together, and when added together.
What is the result?
Evguenia has written down the tongue-twister rhyme of Carolyn Wells
"Betty Botter bought some butter,
but she said, this butter's bitter;
if I put it in my batter, it will make my batter bitter,
but a bit of better butter will make my bitter batter better..."
How many times did she write the letter b or B?
How many phrases below are spelled the same written forward as backward?
Samples of Palindromes
My gym
Top spot
No lemon, no melon
There are on average 160 words on each page of the books.
There are on average 500 pages in each book.
How many words are there in the books?
How many 3-digit numbers can you make using each of the 3 digits: 0, 1, and 2, once each per number?