OPERATION/ SIGNS
When you add a number to another number you are finding the
sum
The inverse of addition
subtraction
4 + x
What is x called
the variable
type a fraction that represents half
1/2
0.5
What place is the 5 in
The tenths place
When you subtract a number from a greater number you are solving for the
difference
The inverse of multiplication
division
How do you solve for the variable
You have to isolate the variable on one side of the equal sign
Use reverse order of operations
Do the inverse operation
simplify this fraction
3/12
1/4
0.5
What does the decimal look like as a percentage?
50%
7n
What is the relationship between 7 & n
they are being multiplied
The inverse of n2
the square root of n2
What is a variable?
a variable is a symbol which works as a placeholder for expression or quantities
Compare the fractions
1/2 <, >, = 1/4
1/2 > 1/4
Write this percentage as a decimal 5%
0.05
42
The 4 is being
squared!
solve
4 (2 + n) = 16
n=2
Simplify this equation
2c + 3 -6a + 10 -c
c + 13 - 6a
When adding or subtracting fractions the denominator
must be the same
75% is equal to what decimal?
0.75
What is the reverse order of operations
SADMEP
What is the inverse of finding the quotient
finding the product
- ( 1 + 3n) =7n + 4
- 5/10 or -1/2 or -0.5
When dividing fractions you must
multiply by the reciprocal
Neveah goes to the store with $20 to buy a sweater that originally cost $25. She knows the sweater is on sale for 15% off. How much is the sweater now? Does Nevaeh have enough money?
The sweater is now $21.25. No, Nevaeh does not have enough money.