IQ Test Labs Monthly
This month's featured article includes some basic
math shortcuts that you can use to amaze your friends. There
are more interesting quotes and fun facts and our offsite
links include a short quiz about well known sayings and
phrases. The news section contains links to stories about
education systems for gifted children and this month our
memory tip is refreshingly called 'give your brain a break'.
1. Puzzles and
2. Article: Math shortcuts to amaze your
3. Quotes and trivia
4. Site of the month: Human Intelligence
5. Word of the month: Evince
6. Memory tip: Give your brain a break
7. In the news
Puzzles and Teasers
Logic Brain Teaser - Name the most recent year in which New
Year's preceded Christmas.
Lateral Brain Teaser - Two girls are born to the same
mother, on the same day, at the same time, in the same year
and yet they're not twins. How can this be?
The letters represent words that are somehow connected in a
You must identify the next letter in the sequence.
Example: M T W T ?
Solution: Wednesday (W), Thursday (T), Friday (F)
Question: D R M F S L T ?
Different words are used to describe well known proverbs
Example: "Rap upon timber"
Solution: "Knock on wood."
Question: Abstention from any aleatory undertakings
precludes a potential escalation of a lucrative nature.
The following words are used in different orientations to
represent common phrases.
Example: FLIGHTFLIGHT is interpreted as 'Connecting Flights'
Question: What word or expression is represented below?
GIVE, GIVE, GIVE, GIVE, GET, GET, GET, GET
Tests and games (Links to other sites)
Test your knowledge of various sayings
Math Shortcuts To Amaze
By Steven Gillman
I had my own math shortcuts when I was a child. Using these meant
that I didn't "show my work" in math class, as was required. This
annoyed many of the teachers, and lowered my grades. I did get the
correct solutions to my math problems, however. I was simply using
different algorithms, ones which I had a hard time expressing on
In my thinking, for example, 97 x 16 became 100 x 16 (1600)
minus 3 x 16 (48). It was easier that way, and thinking this way
became almost automatic. As a result, I might just write down 1552
even though I couldn't explain very well how I arrived at the
answer. My teachers called that a problem, but many years later such
math shortcuts were being sold in seminars and books.
Making Your Own Math Shortcuts
You can make your own math shortcuts. The following may give you
some ideas on how to do that. Alternately, you can try any of the
shortcuts and algorithms you read about and adopt the ones that are
best suited to you. There are no perfect techniques for all people,
because our minds work in slightly different ways.
For example, suppose you want to multiply 68 x 6. My mind
immediately thinks "60 x 6 = 360 and 8 x 6 = 48, and 360 + 48 is
408." That is one way to quickly arrive at a solution without pen
and paper. It is essentially this: (60 x 6) + (8 x 6) = 408.
Want another way? Think of it as (70 x 6) - (2 x 6). The
"internal dialog" might be something like this: "70 x 6 = 420, but
that is two "sixes" too many, so take away two sixes (12) and I have
408." The point is that there is often more than one way, and you
can use whichever math shortcut is easier for you.
If the problem was 68 x 9, by the way, my mind immediately
focuses on the 9. Why? Because it is close to 10, and multiplying by
10 is easy. 68 x 10 is 680, from which I just have subtract the
extra 68 to arrive at the solution of 612. Always look for the
numbers that are close to 10 or 100 or 1000, and you'll find the
easier way to do the math, especially if you are trying to do it in
Percentages can be trickier to do as mental math, but there are
ways. Suppose, for example, that you want to figure what the 4.6%
sales tax will amount to on your $29 book. One quick way to estimate
it is to take 10%, or $2.90, cut that in half to arrive at 5%, or
$1.45, and then just guess at around $1.35, because you know 4.6% is
a little less than 5%. Alternately, you could think of 5% as a 20th
of the price - if this is easier - and then round that figure down a
What if you want a more precise solution? 1% of $29 is easy to
arrive at (.29), so multiply that by 4 to arrive at $1.16. (You
might think of this as (4 x 30) - 4.) Now you just need to add .6%
to that. Think 6 x 29 = 174, and then put the decimal in the right
place: .174. Add that .18 (round it up as the store will likely do)
to the 1.16 and you have $1.34 in sale's tax, pretty close to our
quick estimate. This is not as difficult as it might seem once you
practice these shortcuts a bit.
|Copyright Steve Gillman. For more on How To Increase Brain
Power, and to get the Brain Power Newsletter and other free
gifts, visit: http://www.IncreaseBrainPower.com
Quotes and trivia
Wit is educated insolence.
Character is higher than intellect. A great soul will be strong to
live as well as think.
-Ralph Waldo Emerson
Common sense is not so common.
A message for
action travels from your brain to your muscles as fast as 250
miles per hour.
show that IQ is modestly related to the speed at which you do some
pretty simple things such as comparing two lines to see which is
Wine drinkers on
average have a higher IQ than beer drinkers. Studies show a slight
advantage to wine drinkers ó but do wine drinkers have higher IQs
because they drink wine or vice-versa ? It may be that some people
with high IQ reach a high social status and then choose to drink
wine to fit in.
Site of the month
Human Intelligence -
Resources for studying the historical development of intelligence
theory including biographies, articles, and a timeline, hosted by
Word of the month
To show in a clear manner; to manifest; to make evident;
to bring to light.
Though his earliest tales are little more than quick, offhand
sketches seasoned with slapstick humor, his mature stories evince
the psychological complexity and atmospheric detail that
distinguish his best-known plays.
-- "Quick Trips Through the Imagination", New York Times, July 12,
Give your brain a break
Suppose you've run out of milk, and you decide to
make a quick trip to the grocery store. On the way there, you
think of several more things you need. You reach the store, spot a
few bargains, and fill your cart. Then you return home, and
realize that you forgot to buy the milk you needed in the first
There's a simple and effective way to avoid this
kind of memory lapse: give your brain a break, and make a shopping
On any given day, dozens of things compete for
your attention and your memory capacity. Sometimes the smaller
details simply get crowded out. The result is often minor
forgetfulness. In many cases, the problem is just an overtaxed
Your shopping list will do your remembering for
you, and free you up to focus on other things. But relying on
lists does not mean you have become "over the hill." As evidence
that the details of modern life have exceeded the memory skills of
many people, young and old, consider the explosion in popularity
of palm-sized computers called personal digital assistants.
Without these memory aids, many of the most competent,
accomplished people in the world would regularly run out of milk
and forget to pick up their dry cleaning.
But you donít need a computer to boost your memory
abilities. All you need is a notepad, or a small notebook. Next
time you're planning a quick trip to the store, take a few moments
to jot down a list of the items you need while it's still fresh in
your mind. Later, you won't come home without the milk. Of course,
you still have to remember to take the list with you!
Copyright (c) 2000 Catherine E. Myers
Loss and the Brain
In the news
Who's gifted? Criteria in flux
Super Kids: 8 Ways to Boost Your Baby's Brain Power
Programs for exceptionally gifted students
Nutrition and IQ
Puzzles and teaser solutions
1. This year, new years always precedes
2. They are triplets.
3. Do re mi
4. Nothing ventured nothing gained.
5. Forgive and forget
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