Lesson 1.3 Write Expressions

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# Lesson 1.3 Write Expressions - PowerPoint PPT Presentation

Lesson 1.3 Write Expressions. OBJ: To translate verbal phrases into expressions. ADDITION Sum Plus Total More than Increased by. SUBTRACTION Difference Less than Less Minus Decreased by. Words meaning…. MULTIPLICATION Times Product Multiplied by Of Twice. DIVISION Quotient

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### Lesson 1.3Write Expressions

OBJ: To translate verbal phrases into expressions.

Sum

Plus

Total

More than

Increased by

SUBTRACTION

Difference

Less than

Less

Minus

Decreased by

Words meaning…
MULTIPLICATION

Times

Product

Multiplied by

Of

Twice

DIVISION

Quotient

Divided by

Divided into

Words meaning…
Sample Problems

Translate each phrase by using a variable

• 3 times the sum of 7 and a number y.
• 2 dollars less than Judy had yesterday
• Twice a number
• 25 percent of a number
• 4 less than the quantity 6 times a number.
Try These
• Fifteen decreased by 4 times a number
• Twice the sum of 6 and a number
• The difference of 5 and a number divided by 6
• 5 divided by the square of a number
• If Chris can solve x algebraic equations per minute, how many equations can she solve in four minutes?
Verbal Model
• Describes a real world situation using words as labels and using math symbols to relate the words. You can replace the words with numbers and create a mathematical model, such as an expression.
Rate
• A fraction that compares two quantities measured in different units.
Unit Rate
• A rate in which the denominator of the fraction is 1 unit.
• A 15 oz box of cereal costs \$2.99. Find the unit rate to the nearest cent.