addition and subtraction expressions
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Addition and Subtraction Expressions
Math
September 7, 2010
Numerical Expressions
Use only numbers
45 + 98 0.72 – 0.098
Algebraic Expressions
Uses variables
X + 437.3 85 - y
Word Phrases
Uses words and numbers
a number subtracted from 7
12 more than 6
MORE THAN/LESS THANSUBTRACTED FROM
Anytime you see the word than, to, or from, the second number or variable goes first.
Otherwise, list them in order.
EXAMPLES
43 LESS THAN 86
86-43
MORE EXAMPLES
THE SUM OF 278 AND 563
278 + 563
EVALUATE EXPRESSIONS
SOLVE
PLUG IN AND SOLVE
339 + 638 6.05 + m, when m=2.16
HOMEWORK
PAGE 53 1-14 PAGE 54-55 1-16
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