Virtual SchoolGr7-CIC
Warm Up -
Simplify expression
Evaluate expressions
Algebra vocabulary
Although they are closely related, a Great Dane weighs about 40 times as much as a Chihuahua
Although they are closely related, a Great Dane weighs about 40 times as much as a Chihuahua
An expression for the weight of the Great Dane could be 40c, where c is the weight of the Chihuahua.
Although they are closely related, a Great Dane weighs about 40 times as much as a Chihuahua
An expression for the weight of the Great Dane could be 40c, where c is the weight of the Chihuahua.
When solving real-world problems, you will need to translate words, or verbal expressions, into algebraic expressions.
Word phrases can be written as algebraic expressions.
Word phrases can be written as algebraic expressions.
• Use a variable for the phrase “a number” or unknown value.
Word phrases can be written as algebraic expressions.
• Use the words to determine what operation you are using.
• Use a variable for the phrase “a number” or unknown value.
• In order to translate a word phrase into an algebraic expression, we must first know some key word phrases for the basic operations.
In your notebook/notes:
AdditionAddition SubtractionSubtraction
MultiplicationMultiplication Division Division
Addition Phrases:
• More than
• Increase by
• Greater than
• Add
• Total
• Plus
• Sum
Subtraction Phrases:
• Decreased by
• Difference between
• Take Away
• Less
• Subtract
• Less than*
• Subtract from*
Multiplication Phrases:
• Product
• Times
• Multiply
• Of
• Twice or double
• Triple
Division Phrases:
• Quotient
• Divide
• Divided by
• Split equally
Notes
• Multiplication expressions should be written in side-by-side form, with the number always in front of the variable.
• 3a 2t 1.5c 0.4f
Notes
Division expressions should be written using the fraction bar instead of the traditional division sign.
2
c
x
3
10
y
Let’s try it.
3 more than x
Let’s try it.
the product of 3 and a number t
Let’s try it.
the difference between 10 and a number y
Let’s try it.
the quotient of 25 and a number b
Let’s try it.
32 less than 5 times c
Independent Practice
1. 2.5 divide g2. 4.2 times a number e3. the sum of 10 and a number c4. a number t decreased by 45. 6 less than a number z 6. twice the number x7. the number y divided by 28. a number n increased by 4.5