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tham khảo
1/ -7264 + (1543 + 7264)
= -7264 + 7264 + 1543
= 0 + 1543 = 1543
2/ (144 - 97) - 144
= 144 - 144 - 97
= 0 - 97 = -97
3/ -145 - (18 - 145)
= -145 + 145 - 18
= 0 - 18 = 18
4/ 111 + (-11 + 27)
= 111 - 11 + 27
= 100 + 27 = 127
5/ (27 + 514) - (486 - 73)
= 27 + 514 - 486 + 73
= 27 + 73 + 514 - 486
= 100 + 28
= 28
6/ (36 + 79) + (145 - 79 - 36)
= 36 + 79 + 145 - 79 - 36
= 36 - 36 + 79 - 79 + 145
= 145
7/ 10 - [12 - (-9 - 1)]
= 10 - (12 + 9 + 1)
= 10 - (12 + 10)
= 10 - 10 - 12
= -12
8/ (38 - 29 + 43) - (43 + 38)
= 38 - 29 + 43 - 43 - 38
= 38 - 38 + 43 - 43 - 29
= -29
9/ 271 - [(-43) + 271 -(-17)]
= 271 - (-43 + 271 + 17)
= 271 + 43 - 271 - 17
= 43 - 17 = 26
10/ -144 - [29 - (+144) - (+144)]
= -144 - 29 + 144 + 144
= -29 + 144
= 115
5/ (27 + 514) - (486 - 73)
= 27 + 514 - 486 + 73
= 27 + 73 + 514 - 486
= 100 + 28
= 28
câu này là 128 nhé
1) - 7264 + ( 1543 + 7264 )
= ( - 7264 + 7264 ) + 1543
= 0 + 1543
= 1543
2) ( 144 - 97 ) - 144
= ( 144 - 144 ) - 97
= 0 - 97
= - 97
3) ( - 145 ) - ( 18 - 145 )
= ( - 145 + 145 ) - 18
= 0 - 18
= - 18
4) 111 - ( - 11 + 107 )
= ( 111 + 11 ) + 107
= 122 + 107
= 229
5) ( 27 + 514 ) - ( 486 - 73 )
= ( 27 + 73 ) + ( 514 - 486 )
= 100 + 28
= 128
6) ( 36 + 79 ) + ( 145 - 79 - 36 )
= ( 36 - 36 ) + ( 79 - 79 ) + 145
= 0 + 0 + 145
= 145
1) - 7264 + ( 1543 + 7264 )
= ( - 7264 + 7264 ) + 1543
= 0 + 1543
= 1543
2) ( 144 - 97 ) - 144
= ( 144 - 144 ) - 97
= 0 - 97
= - 97
3) ( - 145 ) - ( 18 - 145 )
= ( - 145 + 145 ) - 18
= 0 - 18
= - 18
4) 111 - ( - 11 + 107 )
= ( 111 + 11 ) + 107
= 122 + 107
= 229
5) ( 27 + 514 ) - ( 486 - 73 )
= ( 27 + 73 ) + ( 514 - 486 )
= 100 + 28
= 128
6) ( 36 + 79 ) + ( 145 - 79 - 36 )
= ( 36 - 36 ) + ( 79 - 79 ) + 145
= 0 + 0 + 145
= 145
a: \(-7264+\left(1543+7264\right)\)
\(=-7264+1543+7264\)
\(=\left(-7264+7264\right)+1543\)
=0+1543
=1543
b: \(\left(144-97\right)-144\)
\(=144-97-144\)
\(=\left(144-144\right)-97\)
=0-97
=-97
c: \(\left(-145\right)-\left(18-145\right)\)
\(=-145-18+145\)
\(=\left(-145+145\right)-18\)
=0-18
=-18
d: \(111+\left(-11+27\right)\)
\(=\left(111-11\right)+27\)
=100+27
=127
e: \(\left(27+514\right)-\left(486-73\right)\)
\(=27+514-486+73\)
\(=\left(27+73\right)+\left(514-486\right)\)
\(=100+28=128\)
f: \(\left(36+79\right)+\left(145-79-36\right)\)
\(=36+79+145-79-36\)
\(=\left(36-36\right)+\left(79-79\right)+145\)
=0+0+145
=145
a.-7264+(1543+7364)
=-7264+1543+7364
=-7264+7364+1543
=100+1543
=1643
những câu sau tương tự
1)-7264+(1543+7264)=-7264+1543+7264=1543
2)(144-97)-144=144-97-144=-97
3)(-145)-(18-145)=-145-18+145=-18
4)111+(-11+27)=111-11+27=100+27=127
5)(27+514)-(486-73)=27+514-486-73=541-486-73=55-73=-18
6)(36+79)+(145-79-36)=36+79+145-79-36=145
7)10-[12-(-9-1)]=10-[12+9+1]=10-12-9-1=-12
8)(38-29+43)-(43+38)=38-29+43-43-38=-29
9)271-[(-43)+271-(-17)]=271-[-43+271+17]=271+43-271-17=43-17=26
10)-144-[29-(+144)-(+144)]=-144-[29-144-144]=-144-29+144+144=-29+144=115
mk ko ghi lại đề bài nha bạn
1. =-7624+1543+7264 = (-7264+7264)+1543
= 0+1543
= 1543
2. = 144 - 97 - 144 = ( 144 -144 ) -97
= 0-97
= 0+ (-97)
= -97
3. = -145 - 18 + 145 = (-145+145)-18
= 0-18
= 0+ (-18)
= -18
4. = 111+ (-11) + 27 = [ 111+ (-11) ] +27
= 100+27
= 127
5. = 27+ 514 - 486 + 73 = ( 27+ 73) + ( 514 - 486)
= 100 + 28
= 128
6. = 36 + 79 +145 -79 -36 = ( 36-36)+(79-79)+145
= 0+0+145
= 145
7. = 10-12-(-9)+1 = 10 + (-12) + 9 +1
= (10+9+1) +(-12)
= 20+(-12)
= 8
8. = 38 -29 +43 -43 -38 =(38-38)+(43-43)-29
= 0+0 -29
= 0+ (-29)
= -29
9. = 271 - (-43) -271 - (-17)=271+43-271+17
= (271-271) + ( 43 +17)
= 0+ 60
= 60
10. = -144 - 29 + (-144) + (-144) = -144 + (-29) + (-144) +(-144)
= [-144 + (-144)+ (-144)] + (-29)
= -144 x3 + (-29)
= -432 + (-29)
= -461
k mk nha bạn
a) -7264 + (1543 + 7264)
= -7264 + 1543 + 7264
= ( -7264 + 7264) + 1543
= 0 + 1543
= 1543
b) (144 – 97) – 144
= 144 - 97 - 144
= (144 - 144) - 97
= 0 - 97
= -97
c) (-145) – (18 – 145)
= -145 - 18 + 145
= (-145 + 145) - 18
= 0 - 18
= -18
d) 111 + (-11 + 27)
= [111+(-11)] + 27
= 0 + 27
= 27
e) (27 + 514) – (486 – 73)
= 27 + 514 - 486 + 73
= (27 + 73) + (514 - 486)
= 100 + 28
= 128
-7264 + ( 1543 + 7264 )
=-7264 + 1543 + 7264
=1543
(144 - 97 ) -144
=144 - 97 - 144
=-97
( -145 ) - ( 18 -145 )
= -145 - 18 - 145
=-308
111 + ( -11 + 27 )
=111 - 11 + 27
=127
( 27+ 514 ) - (486-73)
=27 + 514 - 486 - 73
=-18
( 36 + 79 ) + ( 145 - 79 - 36 )
=36 + 79 + 145 - 79 - 36
=145
( 38 -29+ 43 ) - ( 43 + 38 )
=38 - 29 + 43 - 43 + 38
=47
271 - [ ( -43 ) + 271 - ( -17)]
= 271 + 43 + 271 + 17
=602
-144 - [ 29 - ( + 144 ) - ( + 144 ) ]
=-144 - 29 - 144 - 144
=-461
hok tốt !
a) -7264+(1543 +7264) b) (144-97)-144 c)(-145)-(18-145)
=(-7264)+1543+7264 =144-97-144 =(-145)-18+145
= [(-7264)+7264]+1543 =(144-144)-97 =[(-145)+145}-18
=0+1543 =0-97 = 0-18
=1543 = -97 = -18
1/ - 7264 + ( 1543 + 7264 )
= - 7264 + 1543 + 7264
= ( - 7264 + 7264 ) + 1543
= 0 + 1543
= 1543
2/ ( 144 - 97 ) - 144
= 144 - 97 - 144
= ( 144 - 144 ) - 97
= 0 - 97
= - 97
3/ ( - 145 ) - ( 18 - 145 )
= - 145 - 18 - 145
= ( - 145 - 145 ) - 18
= ( - 290 ) - 18
= - 308
Thế thôi nhé
1/ - 7264 + ( 1543 + 7264 )
= - 7264 + 1543 + 7264
= ( - 7264 + 7264 ) + 1543
= 0 + 1543
= 1543
K mk nha
1 bài nha
Làm hết chắc mk chết
1)-7264+(1543+7264)=-7264+1543+7264=(-7264+7264)+1543=0+1543=1543
2) (144-97)-144=144-97-144=(144-144)-97=0-97=-97
3) -145-(18-145)=-145-8+145=(-145+145)-8=0-8=-8
4)111+(-11+27)=111-11+27=100+27=127
1) 1543
2) -97
3) -18
4) 127
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