Exercise your grey matter with these fun equations and read idioms, proverbs and sayings using the word nine.

The sum of the digits of the number added to 9 is always equal to the sum of the digits of the result. Take any four digit number and try the trick. Ex: 9 + 17 = 26. 1 + 7 = 8 & 2 + 6 = 8

It is easy to work out whether a number is exactly divisible by 9. This is the same as asking whether a number is in the “9 times table”.

All you have to do is add up its digits. If the answer is more than one digit long, you add up the digits again, and go on doing this, until you are left with a single digit. If this single digit is 9 then the original number was divisible by 9. For example, is 781236 divisible by 9? Adding up its digits 7 + 8 + 1 + 2 + 3 + 6 = 27 and adding again 2 + 7 = 9. And because the answer is 9, the original number must be divisible by 9.

Heard this before? Idioms, proverbs and sayings using the word nine:

“I’m floating on cloud nine”
This saying describes feeling euphoric or happy. The phrase came into use in the 1950s when used by the US Weather Bureau to describe the highest cloud, the cumulo-nimbus.

“Going the whole nine yards”
The whole nine yards has a few possible origins, but a common thought it originates from tailors using nine yards of material to make top quality suits.

“Dressed to the nines”
The expression ‘to the nines’ means to the highest degree. Someone dressed “to the nines” is dressed up as much as they can be.

“A stitch in time saves nine”
The stitch in time is simply the sewing up of a small hole and so saving the need for more stitching at a later date, when the hole has become larger.

“A wonder lasts but nine days”
This means that a novelty that loses its appeal after a few days.

“Nine times out of ten”
An expression describing a likely probability.

“A cat has nine lives”

One theory on the origin of this expression is that in ancient times nine was a lucky number. As cats seem able to escape injury time and time again, this lucky number seemed suited to the cat.

Movies that used nine include:

Nine Songs, Nine and a Half Weeks and The Whole Nine Yards. There are nine members of the Fellowship of the Ring in The Lord of the Rings saga, to balance and combat the nine Nazgûl, or Ringwraiths.

We found information about the number 9 from: Properties of the number 9, ‘9’: It’s more than a movie, it’s a magic number, 9 (number). Wikipedia, The Amazing number 9, The number nine, the.Encyclopædia Britannica Online, What Is The Ninth House? , Sagittarius. Wikipedia and A Beginning And An Ending: The Importance Of 9/9/09 In Numerology

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