Adding and subtracting decimals is the same as adding and subtracting whole numbers, except that you need to make sure all numbers have the same number of digits before starting and that you don’t move the decimal point.

For example if you were asked

7.4 + 9 + 3.768 = ?

It will be easiest to add zeros so that all numbers have the same number of digits as the number with the most digits, in this case 3.768 has 4 digits.

You should set it up the same way for subtraction since it will make borrowing easier to visualize.

7 – 5.05 = ?

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• #### miriam

###### March 10, 2012 at 10:05 am

Hello, I have been studying for ged math for months now, but nothing seems to work. just yesterday I came across this website. this site is very helpful I like the way you break things down thank you so much

• #### Ziyi

###### March 12, 2012 at 5:16 am

Hi, thanks for the feedback. Good luck on the test!

• #### Elizabeth Romo

###### July 29, 2012 at 3:43 pm

I love the way you can expalin things soo easy.I have passed all my tests expect for math and i believe that this sight will help me pass it. Thanks.

• #### MissMely

###### June 19, 2013 at 4:08 pm

This site really helps me I’ve been studying for my GED test and I’ve taken it twice and the last time I got a 400. I think I’ll pass it this time with all your help glad I found this site thanks alot(-:

• #### Jacqueline

###### June 20, 2013 at 8:19 pm

I’ve been studying for the MATH part of the GED test for 21 months, failed it twice, now i’ve been brushing up on my math skills for about 2 months to over prepare myself. I came across this site AND let me just say THANK YOU! all i needed was a little explanation and break down the problem to better understand it. This has helped me enough to feel confident to pass it this time. I take my Math test for the GED nest week ðŸ™‚

• #### Anonymous

###### February 7, 2014 at 5:59 pm

Iâ€™ve been studying for the MATH part of the GED test for 21 months, failed it twice, now iâ€™ve been brushing up on my math skills for about 2 months to over prepare myself. I came across this site AND let me just say THANK YOU! all i needed was a little explanation and break down the problem to better understand it. This has helped me enough to feel confident to pass it this time. I take my Math test for the GED nest week ðŸ™‚

• #### mary

###### February 20, 2014 at 3:26 pm

i am having trouble with math on my GED test and i don’t know what to do

• #### Rachelle

###### October 8, 2015 at 7:46 pm

I failed my math test last month, I was 4 points sort of finishing my ged i take the test again in a few days and this website is the best it has helped me so much!

• #### Bethany

###### July 12, 2016 at 3:14 pm

I have a question are you able to use a calculator on the GED test?