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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
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
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
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 + 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
= 0 - 18
= - 18
4) 111 + ( - 11 + 27 )
= 111 - 11 + 27
= 100 + 27
= 127
các câu còn lại bn tự làm nha
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
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