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Translating in mathematics
usually involves changing a verbal phrase, or sentence, into a
mathematical phrase, or sentence.
In this lesson we will do the reverse.
We will translate a mathematical phrase, or sentence,
into a verbal phrase.
Let's look at an
easy example:
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Mathematical Sentence:
x + 13 = 20
Matching Verbal
Expression:
"A number increased by
thirteen is twenty."
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Let's try
another (a little tougher)....
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Mathematical
Sentence:
3y - 7 = 2y + 8
Matching Verbal
Expression:
"When three times a number is
decreased by seven,
the result is the same as when two times the same number
is increased by eight."
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And a little
tougher still....
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Mathematical
Phrase:
85 - 3(a + 7)
Matching Verbal
Expression:
"Eighty-five decreased by
three times the sum of a number and seven."
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Let's try a
little multiple choice this time...
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Choose the mathematical
sentence which matches
the given verbal sentence.
"When eight
is subtracted from five times a number the result is six."
a.) 8 - 5x = 6
b.) 5x - 6 = 8
c.) 5x - 8 = 6
d.) 8 - 6x = 5
Let's look
for the clues.....
In subtraction, the amount you subtract "from" is written first.
In the sentence we are subtracting "from" "five times a number"
That means that "5x" must be written first.
Therefore only choices "b" and "c" could be correct....
Next clue....
"the result" means "equals"
In the sentence "the result is six", is the same as "equals six"
Only choice "c" equals six....
So the correct translation is choice "c"
"5x - 8 = 6"
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For Some More
Practice
CLICK HERE
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