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operations with integers?
im going to give you a few from each part, im not asking for the answer I just need someone to give me a example of one that looks the same. its been a while since i done this but when I see how its done it will come back. here is a few, thanks for any help
Add;;;
-15 + -12=
-14 + 10=
9+ (-26) + 3=
54 + (-6) + 15 (-21)=
subtract;;;
-27 - 16=
45- (-12)=
31-17=
8-(-9)=
multiply
(-3) (-54)=
-3 (7)=
-8(9)=
12(12)=
divide;;;
-21 divided by -7=
-81 divided by 9=
144divided by -12=
90divided by 10
mix;;;
-10 + -3-5=
56 divided by -7 +10=
-3 (20) + -8=
10+ -5 + -3 - 2=
thanks for any help
3 Answers
- Anonymous1 decade agoFavorite Answer
do your own homework
if this is troubling you, you should get help. cause its simple
- 1 decade ago
add,.,.,.
-15 + -12= -(15+12) = - 27
-14 + 10= -4
9+ (-26) + 3= (9+3) -26 = 12 -26 = -14
54 + (-6) + 15 (-21)= (54+15)- (6+21) = 69 - 27 = 42
subtract;;;
-27 - 16= -(27+16) = -43
45- (-12)= 45+12= 57
31-17= 14
8-(-9)= 8+9 = 17
multiply
(-3) (-54)= 162
-3 (7)= -21
-8(9)=-72
12(12)=144
divide;;;
-21 divided by -7= 3
-81 divided by 9= -9
144divided by -12= -12
90divided by 10 = 9
mix;;;
-10 + -3-5= -( 10+4+5) = -19
56 divided by -7 +10= -8 +10 = 2
-3 (20) + -8= -60-8= -(60+8) = -68
10+ -5 + -3 - 2= 10 - (5+3+2) = 10-10 = 0
Source(s): my brain - 1 decade ago
To do these problems you could remember a few rules:
ADDITION
1) Positive number + positive number : this should be easy. 12 + 9 = 21
2) Positive number + negative number : this is another way of doing subtraction.
12 + -5 = 12 - 5 = 7
Also, 4 + -7 = 4 - 7 = -3
3) Negative number + positive number : just switch the order and do it like the second type.
-5 + 12 = 12 + -5 (see above)
MULTIPLICATION
Positive * positive = positive . 5 * 8 = 40
Negative * Negative = positive. -5 * -8 = 40
Negative * Positive = Positive * Negative = Negative. -5 * 8 = 5 * -8 = -40
DIVISION
Same as multiplication.
Positive / positive = positive 36 / 12 = 3
Negative / Negative = positive -36 / -12 = 3
Negative / Positive = Positive / Negative = Negative. -36 / 12 = 36 / -12 = -3
MIX
You have to know your order of operations. First do the small multiplication and division parts, then do the remaining addition and subtraction.
15 + 3*2 = 15 + 6 = 21
8/2 + 5 = 4 + 5 = 9
