Tính hợp lí:
(-97+5674) -5674-(3-21)
Mong mn giúp mình!
Tính nhanh các tổng sau: (5674 – 97) – 5674
(5674 – 97) – 5674 = 5674 – 97 – 5674
= (5674 – 5674) – 97 = 0 – 97 = -97
(5674-97)+(97+18-5674)
\((5674-97)+(97+18-5674)\)
\(=5674-97+97+18-5674\)
\(=(5674-5674)+(-97+97)+18\)
\(=0+0+18\)
\(=18\)
Tính nhanh các tổng sau:
a) (5674 - 97) - 5674
b) (-1075) - (29 - 1075)
a) -97
b) -29
Bấm đúng nha , mình là người đầu tiên nè
a. (5674 - 97) - 5674
= 5674 - 5674 - 97
= -97
b. (-1075) - (29 - 1075)
= -1075 + 1075 - 29
= -29
Bài 1 Tính
(5674-97)-5674
-1075-(29-1075)
(13-135+49)-(13+49)
a,\(\left(5674-97\right)-5674=5674-97-5674=\left(5674-5674\right)-97=-97\)
b,\(-1075-\left(29-1075\right)=-1075-29+-1075=\left(-1075+1075\right)-29=-29\)c
\(\left(13-135+49\right)-\left(13+49\right)=13-135+49-13-49=-135\)
Nếu thấy mình làm đúng thì tick nha bạn,cảm ơn.
Tính nhanh ( sử dụng quy tắc dấu ngoặc nha )
a) ( 5674 - 97 ) - 5674
b) ( -1075 ) - ( 29 - 1075 )
Help me !
a) ( 5674 - 97 ) - 5674
= ( 5674 - 5674 ) - 97
= 0 - 97
= -97
a) \(\left(5674-97\right)-5674\)
\(=5674-97-5674\)
\(=\left(5674-5674\right)-97\)
\(=0-97\)
\(=-97\)
b) \(\left(-1075\right)-\left(29-1075\right)\)
\(=\left(-1075\right)-29+1075\)
\(=\left[\left(-1075\right)+1075\right]-29\)
\(=0-29\)
\(=-29\)
a) \(\left(5674-97\right)-5674=5674-97-5674=\left(5674-5674\right)-97=-97\)
b) \(\left(-1075\right)-\left(29-1075\right)=-1075-29+1075=\left(-1075+1075\right)-29=-29\)
Tính nhanh các tổng sau :
a) \(\left(5674-97\right)-5674\)
b) \(\left(-1075\right)-\left(29-1075\right)\)
a) (5674-97) - 5674
= (5674-5674)-97
= 0-97
= -97
b) (-1075) - (29-1075)
= -1075 - 29 + 1075
= (-1075+1075) - 29
= 0 - 29
= -29
a, \(\left(5674-97\right)-5674\)
\(=\left(5674-5674\right)-97\)
\(=0-97=-97\)
b,\(\left(-1075\right)-\left(29-1075\right)\)
=\(-1075-29+1075\)
\(=\left(-1075+1075\right)-29\)
\(=0-29=-29\)
a) ( 5674 - 97 ) - 5674
= 5674 - 97 - 5674
= 5674 - 5674 - 97
= -97
b) ( - 1075) - ( 29 - 1075)
= - 1075 - 29 + 1075
= - 1075 + 1075 - 29
= 0 - 29
= 29
1.Phá ngoặc rồi tính nhanh:
a,(-8)-(-12-8)
b,1765-(312+1765)
c,(31-12)-(46+31-12)
d,(5674-97)-5674
e,(-1075)-(29-1075)
g,(18+29)+(158-18-29)
h,(13-135+49)_(13+49)
Giải nhanh cho mình xong mình tick cho!!!
a, (-8)-(-12-8)=(-8)+12+8= [(-8)+8}]+12= 0+12=12
b, 1765-(312+1765)= 1765-312-1765=(1765-1765)-312=0-312=-312
c. (31-12)-(46+31-12)= 31-12+46-31+12= (31-31)+(12-12)+46=0+0+46=46
d, (5674-97)-5674=5674-97-5674=(5674-5674)-97=0-97=-97
e, (-1075)-(29-1075)=(-1075)+29+1075=[(-1075)+1075]+29=0+29=29
g, (18+29)+(158-18-29)=18+29+158-18-29=(18-18)+(29-29)+158=0+0+158=158
h, (13-135+49)-(13+49)=13-135+49-13-49=(13-13)+(49-49)-135=0+0-149=0-149=-149
boỏ dấu ngoặc rồi tính:
a)8 - (3+7)
b) (-5) - (9 - 12)
c) (5674 - 97) + (97 + 18 - 5674)
d) (13 - 135 + 49) - (13 + 49)
e) x + 8 - (x + 22)
f) -(x+5) +(x+10) - 5
a. 8-(3+7)= 8-3-7=-2
b. (-5)-(9-12)=-5-9+12=-2
c. (5674-97)+(97+18-5674)=5674-97+97+18-5674=18
d. (13-135+49)-(13+49)=13-135+49-13-49=-135
e. x+8-(x+22)=x+8-x-22=-14
f. -(x+5)+(x+10)-5=-x-5+x+10-5=0
1234+2345+4444+5674=13697 nha bạn
1234 + 2345 + 4444 + 5674 = 13697
HT
= 13 697 nhaaaaaaaaaaa