How do you convert -1 3/4 into a decimal and percent?

2 Answers
Feb 17, 2018

The decimal is #-1.75#.
The percentage is #-175%#

Explanation:

To turn this into a decimal, divide #3# by #4#.

#3/4=0.75#

You can also do this by turning the denominator of the fraction to 100:

#3/4*25/25=75/100=0.75#

Since it is #-1 3/4#, the decimal is #-1.75#.

To turn this into a percent, we know #1# is #100%#, and to turn #0.75# into a percent, multiply by 100 to get the percentage:

#0.75*100=75 ->75%#

The percentage is #-175%#.

Feb 17, 2018

As a decimal, is it #-1.75#, and as a percent, it is #-175%#.

Explanation:

To convert #-1 3/4# to a decimal, you have to use long division to divide #3# into #4#:

#color(white)(m)4|stackrel(0.75)bar3.00#
#color(white)(..)-0#
#color(white)(.......)bar3.0#
#color(white)(...)-2.8#
#color(white)(.......)bar0.20#
#color(white)(...)-0.20#
#color(white)(.......)bar0.00#

So #3/4# as a decimal is #0.75#. Now we can rewrite the mixed fraction:

#color(white)=-1 3/4#

#=-1 * (1+3/4)#

#= -1*(1+0.75)#

#=-1*1.75#

#=-1.75#

Now, to get the number as a percent, simply multiply by #100%#:

#-1.75*100%=-175%#