Question Details

MATH 500 Week 1 Discussion: Arithmetic Evaluation 

Number Forms, Signed Numbers, & Exponents 

Being able to convert from fractions to decimals to percents, and back, is an important ability since different situations require different formats. In this discussion, we will practice converting back and forth. We’ll also work with fractions, including a review on how to multiply, add, and convert from different forms.
1) Convert 4.0005% into a decimal.
2) Convert 400.05% into an improper and a mixed fraction.
3) Convert 4.0555 into an improper and a mixed fraction.
4) Evaluate 3/5 x 20/25 and simplify.
5) Evaluate 2 3/4 + 1 1/2 and simplify.
Using signed numbers in basic arithmetic is an important skill to have since many applications use a variety of numbers. In this discussion, we will practice several arithmetic operations, including the use of exponents.
6) Multiply the following numbers:
a) (+2)(+2) = 
b) (+2)(-2) =
c) (-2)(-2) =
7) Divide the following numbers: 
a) +2/+2 =
b) +2/-2 =
c) -2/-2 =
8) Add the following numbers: 
a) (-10) + (-20) =
b) (+10) + (-20) =
9) Subtract the following numbers: 
a) (-20) - (-30) =
b) (-20) - (+30) =
c) (+20) - (-30) =
10) Evaluate the following exponentials: 
a) (-1)^3 =
b) -1^3 =
c) (-1)^2 =
d) -1^2 =