Page 50 - SPARK OF MATH book 6
P. 50
(4-1) Introduction of Algebra.
Algebra is a type of mathematics that uses letters—called variables, to
represent quantities.
Juan has 4 dollars. He wants to buy
a cd for 11 dollars. How much more
money does he need?
4+ =11 4+ =11
Write an algebraic expression for the word expression.
The sentence The expression
Add y to number 8. y+8
Subtract 14 from . -14
The product of 4 and a.
30 more than S.
Subtract 5 from 4 times C.
30 divided by C.
8 times the product of 5 and .
15 less than V. V-15
An expression is a phrase that includes at least one variable.
5 3
4 6 2 y
An equation is an algebraic or numerical sentence that shows
two quantities are equal.
Example:
4 2 11
b 5 30
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