anonymous
  • anonymous
Isn't -2.25 +1.75 equal to -1.5?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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Mertsj
  • Mertsj
No.
anonymous
  • anonymous
Would you care to expound on that?
Mertsj
  • Mertsj
Let's say you have a $1.75 and you want to buy something that costs $2.25. What is your deficiency as far as the money is concerned?

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More answers

anonymous
  • anonymous
the difference, 50 cents
Mertsj
  • Mertsj
There you go. -2.25+1.75=-.5
anonymous
  • anonymous
I know that 0.5 is the correct answer but every time I work it out I get -1.5. I still don't get it.
anonymous
  • anonymous
Can you show me your working please?
Mertsj
  • Mertsj
|dw:1328046784853:dw|
anonymous
  • anonymous
but -2 +1 is -1
Mertsj
  • Mertsj
When you add two numbers with opposite signs, subtract the two numbers while ignoring the signs. Then give the answer the sign of the bigger number.
Mertsj
  • Mertsj
|dw:1328046897675:dw|
anonymous
  • anonymous
then why did u add the fives and... what did you do after that??
Mertsj
  • Mertsj
I subtracted the fives. 5-5=0
anonymous
  • anonymous
so what's a one doing over the 2 in the next column?
Mertsj
  • Mertsj
I borrowed 1 from the 2. That made the 2 above the 7 into a 12
Mertsj
  • Mertsj
I think the problem might be that you don't know how to subtract when you have to borrow.
Mertsj
  • Mertsj
What is 523-358?
anonymous
  • anonymous
ok i got that, what if i put it this way, i should get the same answer but i don't|dw:1328047132639:dw|
Mertsj
  • Mertsj
When you subtract, you put the bigger number on top.
anonymous
  • anonymous
165
anonymous
  • anonymous
isn't the positive number the bigger one?
Mertsj
  • Mertsj
The number with the bigger absolute value. The number that is the bigger if you ignore the signs.
anonymous
  • anonymous
ohhh, didn't know that
Mertsj
  • Mertsj
Did you notice how I wrote the problem? That's the way you should write it.
anonymous
  • anonymous
okay, thanks a lot
Mertsj
  • Mertsj
yw
anonymous
  • anonymous
wait, how come the answer is negative, a negative and positive 1 are supposed to cancel each other...
anonymous
  • anonymous
oh never mind :)
anonymous
  • anonymous
sign of the bigger number right? got it
Mertsj
  • Mertsj
You give the answer the same sign as the number with the greatest absolute value. 2.25 is bigger than 1.75 and 2.25 is negative. So the answer will be negative.
anonymous
  • anonymous
thanks
Mertsj
  • Mertsj
yw

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