## anonymous one year ago Subtract. – 0.41 – 8.91 A. –9.32 B. –8.50 C. 8.50 D. 9.32

1. anonymous

@Hero

2. texaschic101

when adding/subtracting with signs....if the signs are the same, add them and use the same sign. If the signs are different, subtract them and use the sign of the bigger number.

3. anonymous

i think D or A mostly D

4. texaschic101

think about it....the signs are the same....so they are to be added and you would use the same sign....so it would be - 9.32....understand ?

5. texaschic101

It can get a little confusing because adding/subtracting with signs has a whole different set of rules then multiplying/dividing with signs

6. anonymous

wait i was wrong it was A

7. texaschic101

it is A....signs are the same...so you add and keep the same sign

8. anonymous

oh ok i have 2 more plz help

9. texaschic101

what ya got ?

10. anonymous

Evaluate d – 7.5 when d = –3.82. A. –11.32 B. –3.68 C. 3.68 D. 11.32

11. texaschic101

ok....after subbing your problem becomes : -3.82 - 7.5.....look familiar....signs are the same....so add and keep the same sign

12. anonymous

-11.32 i was thinking that

13. texaschic101

you got it :)

14. texaschic101

got another one ?

15. anonymous

Evaluate m – n when m = –1.5 and n = –7.7. A. –9.2 B. –6.2 C. 6.2 D. 9.2

16. anonymous

A?

17. texaschic101

ok...after subbing your problem becomes : -1.5 - (-7.7).....little different here...we have to distribute the negative through the parenthesis changing the problem to : -1.5 + 7.7.....so the signs are different. So you subtract (7.7 - 1.5) and use the sign of the bigger number.

18. anonymous

C the bigger number is positive

19. anonymous

i might have done something wrong

20. texaschic101

correct :)

21. texaschic101

because the -7.7 became + 7.7 making the sign positive

22. anonymous

yay i got a 100 and now i under stand this =)

23. texaschic101

good to hear....but like I said, these rules are different from the rules that apply to multiplying/dividing with signs. Try not to get them mixed up

24. anonymous

ok :)

25. anonymous

you are the best :)

26. anonymous

see ya thanks

27. texaschic101

lol....I don't know about that...but thank you :)