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34.6+5.3+5.4=(34.6+5.4)+5.3=40+5.3=45.3
84.7+15.3+26.6=(84.7+15.3)+26.6=100+26.6=126.6
45.1-12.35-28.65=45.1-(12.35+27.65)=45.1-40=5.1
563-174-26=563- (174+26)=563-200=263
342-69-31=342-( 69+31 )=342-100=242
636+995=636+1000-5=1636-5=1635
47+86+53=(47+53)+86=100+86=186
825-98=825-(100-2)=825-100+2=727
77+257+23=(77+23)+257=100+257=357
197+126=200-3+126=200+126-3=326-3=323
252-196=252-(200-4)=252-200+4=56
3.7+13.5+6.5=3.7+(13.5+6.5)=3.7+20=23.7
23.2-5.8-4.2=23.2-(5.8+4.2)=23.2-10=13.2
56+96+44=(56+44)+96=100+96=196
74-11.7+7.7=(74+7.7)-11.7=81.7-11.7=70
59+103=59+100+3=159+3=162
193-49-51=193-(49+51)=193-100=93
45.5+72.3+27.7=45.5+(72.3+27.7)=45.5+100=145.5
834-40+106=(834+106)-40=940-40=900
253-87-13=253-(87+13)=253-100=153
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189.42+325.87=515.29
547.54-376.76=170.78
764.7+338.5=1103.2
7.32-3.57=3.75
4.48+9.71=14.19
32.5+58.9=91.4
73-48=35
58.3-28.9=29.4
154.6-86.7=67.9
548-483=65
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