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Algebra



Day5, Warm Up Exercises
Simplify.
2.)   - 4 + 0
17.)   7 - 4 + 17
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Day 5 Exercises
Write in symbols the same thing as these words.
1. a number: x
2. one more than a number: x + 1 or 1 + x
3. 60 more than a number: 60 + x or x + 60
4. twenty less than a number: x - 20
5. the sum of a number and 4: x + 4 or 4 + x
Write it in 4 different ways.
6. the product of a number and two
(2)(a) or 2a or 2(a) or (2)a or 2·a or a·2
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Day 12, Review of WRITE EXPRESSION & CODE Homework
Write an algebraic expression and its code.
 
Jackie.)   the product of five and a number decreased by the number.
(product) - (number)
(5(number)) - (number)
5x - x
4x
 
Laurel.)   the product of three more than a number and a different number is divided by 5
(product)/5
(three more than a number)(different number)/5
((number) + 3)(different number)/5
(x + 3)(y)/5
 
Abby.)   the sum of a number and 7 added to the product of 4 and the number
(sum) + (product)
((number) + 7) + (4(number))
(x + 7) + (4x)
x + 7 + 4x
 
A.D..)   the sum of a number and two
(sum)
(number) + (2)
x + 2
 
Steve.)   the sum of a number and six
(sum)
(number) + (6)
x + 6
 
Terrell.)   five less than a number
(number) - 5
(x) - (5)
x - 5
 
Aggie.)   the sum of a number and two increased by the product of a number and 3
(sum) + (product)
((number) + 2) + (3(number))
x + 2 + 3x
4x + 2
 
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Day14 Homework
Qu. 1 & 2: Write the code & expression
 
1. the perimeter of a triangle in which the smallest side is one less than the middle and the largest side is one more than the middle
(perimeter)
(smallest) + (middle) + (largest)
((middle) - 1) + (middle) + ((middle) + 1)
(x - 1) + (x) + (x + 1)
3x
 
2. the total value of the following coins:
some pennies,
five more nickels than pennies,
one fewer quarter than the number of pennies
(pennies) + (nickels) + (quarters)
1(pennies) + 5(nickels) + 25(quarters)
1(x) + 5(x + 5) + 25(x - 1)
x + 5x + 25 + 25x - 25
31x
 
3. Write an algebraic area problem and answer it.
(Student Answers )
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Day 26: Solve, find.
Solve.
1.)   3x - 6 = 4x + 2
2.)   -4x = -8x + 1
3.)     A bank holds 15 coins worth $1 in total. Some are dimes. Some are nickels. Find how many of each.
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