February 13, 2015
Conversion Between Irrational Numbers and Approximate Decimal
Form
What is the square root of 26?
a. 4.8
b. 5.1
c. 5.8
d. 6.2
February 13, 2015
February 13, 2015
What is the cube root of 30?
February 13, 2015
This formula is not given on the TEAS Test.
Percent of Increase or Decrease
Ex: The price of a new backpack goes up from $20 to $45.
What is the percent of increase?
February 13, 2015
A shirt is reduced from $50 to $45. What is the percent of
decrease?
February 13, 2015
Equation Technique for Solving Percent Problems.....
is means equal (=)
of means multiply
"what" is the variable (a)
Ex: 15% of 500 is what number?
February 13, 2015
15% of 500....
Think about 10% of 500.... which is 50.
Think about 20% of 500.... which is 100.
15% falls right between 10% and 20% and 75 is right between 50
and 100.
February 13, 2015
What percent of 250 is 10?
What PERCENT!!!!!?????
February 13, 2015
Percents, Fractions, and Decimals.....
Ex: Convert 18% to a fraction, then convert that to a decimal.
A percent is ALWAYS written over 100.... (drop the %).
February 13, 2015
Ex: Convert 1/6 to a percent. Round to the nearest percent if
necessary.
February 13, 2015
Fraction to Percent? How? Get the decimal form then D2P.
Percent to Fraction? How? Put it over 100 and simplify.
Decimal to Percent? How? D2P
Percent to Decimal? How? D2P
Fraction to Decimal? How? Long Division.
February 13, 2015
Comparison of Rational Numbers.... and some Decimals
Which is greater: 4/7 or 5/9 ?
The PROPER way to compare fractions is to find a common
denominator.
February 13, 2015
Reconciliation of a Checking or Savings Account
Ex: Reconcile this checking account for the month of January
2015. Deposits were made for $32.56, $125.42, $675.90, and
$831.89. Checks were written for $85.98, $1045.00, $16.57,
$5.12, and $79.00. Interest earned is $1.79 and there is a service
charge of $5.00. The previous balance was $1005.34. What is the
new balance?
February 13, 2015
Take Home Pay?
Ex: A nurse earns $28.31 per hour. Deductions for each 2-week
pay period are the following:
*federal taxes = $256.18
*federal insurance = $124.95
*state tax = $198.12
* retirement plan = $100.00
*health insurance = $89.51
If the nurse works three 12 hour shifts each week, what is the take
home pay every 2 weeks?
February 13, 2015
Materials and Costs
A family wants to recarpet the
following room. How much
carpeting is needed?
(square feet) = AREA!!!!
THE TOTAL AREA IS 60 square feet.
Suppose the carpet is $5 per square foot.
60x5 = $300