Less than or subtracted from
WORD PROBLEMS
Translating English into Math
Math Symbols
+
¨C
¡Á
¡Â
=
plus
sum of
added to
more than
increased by
greater than
minus
difference of
subtracted from
less than
decreased by
times
product of
multiplied by
twice
doubled, tripled, etc¡
divided by
quotient of
over
per
into
ratio of
equals
is equal to
is
total¡is
the same as
the result is
Others Math Symbols
¡°is less than¡±
<
¡°is less than or equal to¡±
¡Ü
¡°is greater than¡±
>
¡°is greater than or equal to¡±
¡Ý
¡°squared¡±
Raise to the power of 2
¡°cubed¡±
Raise to the power of 3
example: n 3
These unknowns turn into variables, such as x or n
¡°a number¡±, ¡°a value¡±, etc
example: n 2
IMPORTANT!!!
Always reverse the order for any statements that have
¡°less than¡± or ¡°subtracted from¡±.
¡°A number less than five¡± would translate to ¡° 5 ? n ¡± or
¡°10 subtracted from a number¡± would translate to ¡° n ? 10 ¡±
The word ¡°total¡± means add all the values and set equal to.
¡°The total of ten, twenty and a number is sixty¡± would translate to ¡° 10 + 20 + n = 60 ¡±.
The phrase ¡°greater than¡± differs from the phrase ¡°is greater than¡± where ¡°greater
than¡± represents adding some value(s) and the phrase ¡°is greater than¡± represents
an inequality. The same goes for ¡°less than¡± phrases.
¡°Six greater than five¡± would translate to ¡° 6 + 5 ¡±
Whereas
¡°A number is greater than four¡± would translate to ¡° x > 4 ¡±.
EXAMPLE
It is helpful to translate the words into symbols first.
Twice a number less than four is equal to six times a number plus five.
n
6
¡Á
n
4
=
+
2
¨C
5
REVERSE THE ORDER WHERE
THERE IS A ¡°LESS THAN¡±
So, we can translate this into the equation
4 ? 2 n = 6n + 5
Note:
The one thing to be clear about is ¡°and¡± has no direct translation. We might have used the
phrase ¡°two and three is five¡± to mean 2 + 3 = 5. However, ¡°and¡± is used to link two items and
depending on the word in front, ¡°and¡± will be replace by the appropriate symbol.
For example:
Sum of 2 and a number
2+x
Difference of 4 and a number
4¨Cx
Product of 6 and a number
6x
Quotient of a number and ten
n ¡Â 10
NOW TRY SOME ON YOUR OWN¡
1) If a number is increased by the product of the number and ten, the result is the number squared plus five.
Note:
When there is a product of more than one item, parenthesis is used.
For example: Seven times the sum of a number and four
translates to 7 ( x + 4 )
2) The difference of six and three times the sum of five and a number is nine less than the number.
ANSWERS: 1) x + 10 x = x 2 + 5 ,
2) 6 ? 3(5 + x ) = x ? 9
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