







Subtraction of two numbers in different bases 
20161007 

From Wica: Hello,
So happy I found this site. I am having problems with bases. My question is :
Please perform the subtraction between two number over different bases :
A. (5874)base 12  (216)base 9
B. (216)base 9  (5874)base 12 Answered by Penny Nom. 





Subtraction in a base larger than ten 
20160131 

From Jenalee: Hello,
So happy I found this site. I am having problems with bases. My question is 97B9  6A3A base 16 for both.
Please help. Answered by Penny Nom. 





Subtraction in base 8 
20151021 

From Adi: Hi!
Can you help me with a nagging problem, I searched a lot over the web and couldn't find it.
I saw this site I gave it a try and I found it to my liking.
I am confused how to subtract bases from other bases:
567 (in base 8)
 456 (in base 8)
______________
?????????
How do you do this? I do know how to carry and subtract with different bases. Can
you please help me?
Thanks,
Adi Answered by Penny Nom. 





Subtraction base 5 
20150829 

From nakita: can u explain the quinary subtraction ...
(3000) (2342) all the numbers are in quinary number system Answered by Penny Nom. 





8 3/8  6 1/4 
20110321 

From lenora: explain an error pattern in each of the following. 8 3/8  6 1/4 = 2 2/4 Answered by Penny Nom. 





What time did susan go to bed? 
20100214 

From Sophia: Susan woke up at 7:42 Am to get ready for school. She slept for 10 and 1/3 hours. What time did she go to bed? Answered by Stephen La Rocque. 





Subtraction base 5 
20090809 

From Nikki: can you help me how to do subtraction in base 5 notation. example is 3434  51?
how do you do this in base 5?
can you please explain how you do this & the answer as i have no idea.
Thank you kindly
Nikki Answered by Harley Weston. 





A number puzzle 
20090415 

From Julie: Hi, please help me!!! I have a subtraction puzzle...
5 digits minus 4 digits = 33333
Only using numbers 19 once each.
I can get 33323 but then thats it!!! Please how do I work it out?
There must be a simple way??
Thankyou Answered by Claude Tardif. 





A subtraction problem with negative numbers 
20070412 

From Bridget: my daughter has to change a subtraction problem with negative numbers in it to an addition problem with negative numbers and then solve the problem such as:
4(2)=? Answered by Penny Nom. 





The language of subtraction 
20050926 

From Chris: When you have an addition problem you have two addends that equal a sum. Therefore . . .
I know the answer to a subtraction problem is the difference  what is the name of the numbers that make up a subtraction problem? Answered by Diane Hanson and Harley Weston. 





1242, 826, 1034, 930, 1658 
20050831 

From Elizabeth: here is a math question my niece gave me, grade 7
1242, 826, 1034, 930, 1658
first day of school and this is what they give her no explanation Answered by Harley Weston. 





The answer to a subtraction problem 
20050322 

From Libby: What is the name of a number that is the answer to a subtraction problem? Answered by Diane Hanson and Claude Tardif. 





F = 3 + 3 
20020319 

From Jessica: F= 3 + 3 WHAT IS F????? Answered by Penny Nom. 





Borrowing from zero 
20010330 

From Nikki: Here is the problem: 5,033.56  866.20 Now I know this equals 4,167.36 which I figured out on the calculator just to make sure. But when I did it by hand, I kept ending up with 5,167.36, which I knew was impossible. What am I doing wrong?? Answered by Leeanne Boehm and Claude Tardif. 





Order of operations 
20001126 

From Margaret Pratt: My daughter has a math question and I am afraid I am of no help. Can you help? 2x5/2+15= She arrives at 8 as the answer and has been told this is incorrect. Any help you can give would be appreciated. Answered by Penny Nom. 





Subtracting fractions 
20000826 

From Sarah Stanczyk: how is this problem solved?? 3/ x+1  5/x ( 3 divided by x +1 subtracted by 5 divided by x) Answered by Penny Nom. 





Why does division start from the left? 
20000524 

From Salil Dave: Addition, subtraction and multiplications start with right most digit and proceed left, but division starts from leftmost digits and goes right ... why? Answered by Harley Weston. 





Borrowing 
20000417 

From A college student: How would you explain borrowing to an elementary school student? Answered by Penny Nom. 

