1, -92 – (-192+45+9)
2, (23+(-32-18-22) – (-6)
3, -(81-23+27)-(-41-100)
4, -(-87+12+320)-(-28-1+9)
5, (-4) 9 )-125) 25.(-8)
6, 7.(-25).(-3)2.(-4)
9, (-18)+(-31)+98+|-18|+(-69)
10, 115 – (-85)+53-(-500+53)
1, -92 – (-192+45+9)
2, (23+(-32-18-22) – (-6)
3, -(81-23+27)-(-41-100)
4, -(-87+12+320)-(-28-1+9)
5, (-4) 9 )-125) 25.(-8)
6, 7.(-25).(-3)2.(-4)
9, (-18)+(-31)+98+|-18|+(-69)
10, 115 – (-85)+53-(-500+53)
1,
$ -92 – (-192+45+9)$
$=-92-(-138)$
$=-92+138$
$=46$
2,
$(23+(-32-18-22) – (-6)$
$=[23+(-72)]-(-6)$
$=-49+6$
$=-43$
3,
$-(81-23+27)-(-41-100)$
$=-85-(-141)$
$=56$
4,
$-(-87+12+320)-(-28-1+9)$
$=-245-(-20)$
$=-225$
5,
$((-4) 9 -125) 25.(-8)$
$=(-36-125).(-200)$
$=(-161).(-200)$
$=32200$
6,
$7.(-25).(-3)2.(-4)$
$=[(-4).(-25)].[7.(-3).2]$
$=100.(-42)$
$=-4200$
9,
$(-18)+(-31)+98+|-18|+(-69)$
$=(-18)+(-31)+98+18+(-69)$
$=67+(-69)$
$=-2$
10,
$115 – (-85)+53-(-500+53)$
$=115+85+53+500-53$
$=200+500$
$=700$
Đáp án: 1, -92 – [ -192+45+9]
= -92 + 192 -45- 9
= 100 – 45-9
= 55 – 8 = 47
2, [23 +[-32-18-22 ] -[-6]
= 23 – 32 – 18 -22 + 6
= -9 – 18 – 22 +6
= – 27 – 22 +6
= -49 + 6
= – 43
3 : -[81-23+27] – [-41 -100 ]
= -81 + 23 -27 + 41 +100
= -58 – 27+41 +100
= -85 + 41+ 100
= -44 + 100
= 56
4 : -[-87+12+320]-[-28-1+9]
= – 87-12-320 +28+1-9
= -75 -320 + 28 +1-9
= 245 + 28+1-9
= 273 +1-9
= 174 – 9 = 165
5: (-4) 9 )-125) 25.(-8)
bạn ghi không rõ mình không hiểu được ??
6 : 7.(-25).(-3)2.(-4)
= -175 . [-6] .[-4]
-175 . 24 = -4200
9: [-18]+ [-31] +98+|-18| +[-69]
= -49 + 98 +18 + [-96]
= 49 +18 + [-96]
= 67 +[-96]
= -29
10 : 115 – [-85] + 53 -[-500+53 ]
= 200 + 53 +500-53
= 253 + 500 – 53
= 753 – 53
= 700