Writing & Describing Algebraic Expressions Less Than Writing & Describing Algebraic Expressions 5 + x MORE THAN

Chapter 2 Lesson 2 Variable: a symbol that stands for a number. Examples: a, b, x, y, …... Algebraic Expressions: a group of numbers, variables, and operations. Examples: 13 - g z + 2 3x + 8

Add Subtract Multiple Divide plus minus the product the quotient Combined, together the difference multiply, times divide the sum subtract groups of into total of *less than times each, for every increased by decreased by double, triple per *more than fewer than Twice out of additional how much more than.. of shared equally

Examples: 3 less than a number n - 3 The sum of 5 and a number 5 + b The product of 7 and y 7y

Rules: Write each problem the way you read the words from left to right. “more than” OR “less than” means flip the problem parts.

Write an algebraic expression for each word phrase. The sum of eighty-nine and a number. 2. The difference between forty-six and h. The quotient of twenty and a number. 4. Fifty-five times f.

Write an algebraic expression for each word phrase. one more than the product of twelve and a number Answer: 12p + 1 four less than a number n divided by two Answer: n ÷ 2 - 4 Six minus the quotient of u and two Answer: 6 – u ÷ 2

Translate each algebraic expression into words. Answer: 3 more than a number 2. 7h Answer: the product of 7 and h 3. a – 5 **use the word “less than” Answer: 5 is less than a

Translate each algebraic expression into words. Answer: 4 multiplied by b minus 3 OR three less than the product of four and b 16g + 12 Answer: The product of 16 and g plus 12 OR Sixteen times g plus 12

Chapter 2 Lesson 3 Function Tables Evaluate each expression to find the missing value in each table. w w ÷ 4 n 4 x n + 6 88 1   60 2 100 3

Evaluate each expression to find the missing value in each table. 1   6 7 n 25 - n 20 5   18 9

Find an expression for each table.   72 9 88 11 n   15 40 25 50 35 60

Find an expression for each table.   13 26 9 18 30 60 25 50 2n x   8 6 4 2 x - 2

Combining Like Terms 3s + 7 – 4 + 4s – 5s + 8p Let’s put together things that are alike: 3s + 4s – 5s= 2s 7 – 4 = 3 8p Altogether: 2s + 3 + 8p Let’s do more

Combining Like Terms

Review of today’s lessons

Rules: Write each problem the way you read the words from left to right. “more than” OR “less than” means flip the problem parts.

Translate each algebraic expression into words. Answer: 3 more than a number 2. 7h Answer: the product of 7 and h 3. a – 5 **use the word “less than” Answer: 5 is less than a

Evaluate each expression to find the missing value in each table. 1   6 7 n 25 - n 20 5   18 9

Combining Like Terms 3s + 7 – 4 + 4s – 5s + 8p Let’s put together things that are alike: 3s + 4s – 5s= 2s 7 – 4 = 3 8p Altogether: 2s + 3 + 8p Let’s do more

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