1, 29.73+29.28-29
=29.73+29.27
=29.(73+27)
=29.100
=2900
2, 6 ².37+12.38.3+18.25.2
=36.37+36.38+36.25
=36.(37+38+25)
=36.100
=3600
3, -28+[16+(-213)]+|-28|+|-213|
=-28+16+(-213)+28+213
=[(-28)+28]+[(-213)+213]+16
=0+0+16+16
4, -316-(-115)+|-29|-(115-316)
=-316+115+29-115+316
=[(-316)+316]+(115-115)+29
=0+0+29=29
5,-31+18+|-31|+(-18)+99
=-31+18+31+(-18)+99
=-31+18+31(-18)+99
=[(-31)+31]+[18+(-18)]+99
=0+0+99=99
6, 180:{|-33|+[4 ².5-(14+ 3mũ11: 3mũ9)]}
=180:{33+[4 ².5-(14+ 3²)]}
=180:{33+[16.5-(14+ 9)]}
=180:{33+[16.5-23]}
=180:{33+[80-23]}
=180:{33+57}
=180:90
=2
7,160-[120-(12-4 ²)]+ 1mũ2020
=160-[120-(12-16)]+ 1
=160-[120-(-4)]+ 1
=160-[120+4]+ 1
=160-124+ 1
=36+1
=37
#quangtai6a1
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