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a, 4524 - ( 864 - 999 ) - ( 36 + 3999 )
b, ( 1456 + 23 ) - 1456
c, ( 116 + 124 ) - ( 215 - 116 - 124 )
☠ 
a,
= 2354 - 45 - 2354
= -45
b,
= 16 + 23 + 153 - 16 - 23
= 153
c,
= -3752 - 29 + 3632 - 51
= ( 3632 - 3752 ) - ( 29 + 51 )
= -120 - 80
= -200
a,
= 2354 - 45 - 2354
= -45
b,
= 16 + 23 + 153 - 16 - 23
= 153
c,
= -3752 - 29 + 3632 - 51
= ( 3632 - 3752 ) - ( 29 + 51 )
= -120 - 80
= -200
a.(1456+23)-1456
=1456+23-1456
=(1456-1456)+23
=23
b.(-1999)-(-234-1999)
=-1999-(-234)+1999
=(-1999+1999)-(-234)
=-(-234)
=234
c.(116+124)+(215-116-124)
=116+124+215-116-124
=(166-166)+(124-124)+215
=215
d.(435-167-89)-(435-89)
=435-167-89-435+89
=(435-435)-(89-89)-167
=-167
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#hungB
a) = 1456 + 23 - 1456
= ( 1456 - 1456 ) + 23
= 0 + 23
= 23
b) = ( -1999 ) + 234 + 1999
= ( -1999 + 1999 ) + 234
= 0 + 234
= 234
c) = 116 + 124 + 215 - 116 - 124
= ( 116 - 116 ) + ( 124 - 124 ) + 215
= 0 + 0 + 215
= 215
d) = 435 - 167 - 89 - 435 + 89
= ( 435 - 435 ) + ( -89 + 89 ) - 167
= 0 + 0 - 167
= -167
a, 38 - 815 - (65 - 815)
= 38 - 815 - 65 + 815
= 38 - (815 - 815) - 65
= 38 - 0 - 65
= - (65 - 38)
= - 27
b, (43 + 863) - (137 - 57)
= 906 - 80
= 826
a)3752-(29-3632)-51
=3752+(-29)+3632-51
=[3752+3632]-(29+51)
=120-80
=40
b) 4524-(864-999)-(36+3999)
=4524-864+999-36-3999
=(4524-864)-(3999-999)-36
=3660- 3000-36
=660-36
=624
c)100 - (137 +572) + (263 -291)=-637
a: \(-59+71-\left\{-83-\left(95\right)\right\}\)
\(=71-59+81+95\)
\(=12+81+95\)
\(=93+95=188\)
b: \(-257-\left\{\left(-257+156\right)-56\right\}\)
\(=-257-\left(-257+156-56\right)\)
\(=-257-\left(-257+100\right)\)
\(=-257+257-100=-100\)
c: Sửa đề:\(\left(435-167\right)-89-\left(435-89\right)\)
\(=435-167-89-435+89\)
=\(\left(435-435\right)+\left(-89+89\right)-167\)
=0+0-167
=-167
d: \(-329+\left(15-101\right)-\left(25-440\right)\)
\(=-329+15-101-25+440\)
\(=\left(440-329-101\right)+\left(15-25\right)\)
=10-10
=0
e: \(\left(116+124\right)+\left(215-116-124\right)\)
\(=116+124+215-116-124\)
\(=\left(116-116\right)+\left(124-124\right)+215\)
=0+0+215
=215
f: \(4524-\left(864-999\right)-\left(36-999\right)\)
\(=4524-864+999-36+999\)
\(=4524-\left(864+36\right)+999\cdot2\)
\(=4524-900+1998=5622\)