2024年4月6日发(作者:文良翰)
应用加法交换律和结合律简便计算2
351+(360+149)= 134+207+366+93= 16+(379+284)=
395+5+292+108= 282+118+142+158= 145+(584+55)=
34+258+66+542= 220+285+215+80= 141+(413+359)=
322+(375+278)=
365+235+64+36=
308+(386+192)=
18+182+103+97=
281+45+119+255=
133+(65+467)=
65+(478+435)=
203+171+297+129=
330+3+370+97=
70+94+206+30=
81+(433+119)=
96+(65+104)=
485+15+184+16=
2+48+498+152=
131+92+8+169=
319+181+97+303=
179+59+41+221=
281+(294+219)=
647+53+175+25=
410+68+32+90=
453+247+37+63=
41+168+32+59=
379+221+4+96=
272+(29+28)=
255+(362+145)=
134+12+566+188=
190+43+257+110=
66+662+38+134=
227+(232+273)=
181+(96+119)=
10+(752+90)=
93+207+493+7=
162+283+17+138=
240+6+194+460=
478+6+222+194=
64+336+181+19=
423+117+177+83=
68+(848+32)=
344+20+380+56=
12+(150+188)=
357+(237+143)=
86+(211+314)=
146+148+152+254=
56+447+44+153=
156+(158+444)=
87+(550+13)=
80+162+520+38=
117+(319+383)=
112+(568+88)=
589+111+46+54=
293+18+182+7=
83+92+8+317=
538+62+193+107=
536+(45+164)=
185+415+76+24= 92+340+260+8= 168+532+52+148=
192+126+408+174= 18+48+282+152= 476+210+24+190=
66+393+34+407= 334+(279+166)=
99+101+229+371= 178+(30+122)=
13+287+61+39= 23+(372+277)=
388+312+82+18=
502+141+198+59=
295+80+20+405=
23+(55+177)=
33+345+455+67=
159+303+197+41=
126+(448+74)=
145+344+56+55=
133+(216+467)=
423+(113+177)=
48+114+152+86=
561+(223+139)=
208+392+31+69=
189+111+295+205=
11+27+389+73=
162+21+438+179=
40+(447+60)=
195+336+205+164=
261+39+7+93=
152+106+194+48=
63+14+86+37=
575+125+85+115=
182+26+74+318=
243+36+457+64=
36+117+83+64=
392+208+92+108=
499+(70+201)=
130+170+31+69=
88+(615+12)=
51+(520+49)=
309+162+391+38=
88+(407+12)=
131+169+559+41=
50+(62+250)=
530+(98+170)=
471+180+29+120=
287+57+113+443=
172+228+28+72=
84+(405+16)=
107+393+73+227=
27+411+73+189=
14+69+686+31=
471+(282+229)=
694+(223+6)=
18+(93+382)=
197+42+503+158=
312+171+188+129=
22+42+158+478=
9+(382+191)=
188+186+14+312=
161+257+143+339=
52+(589+248)=
177+156+44+23=
190+423+110+177=
2024年4月6日发(作者:文良翰)
应用加法交换律和结合律简便计算2
351+(360+149)= 134+207+366+93= 16+(379+284)=
395+5+292+108= 282+118+142+158= 145+(584+55)=
34+258+66+542= 220+285+215+80= 141+(413+359)=
322+(375+278)=
365+235+64+36=
308+(386+192)=
18+182+103+97=
281+45+119+255=
133+(65+467)=
65+(478+435)=
203+171+297+129=
330+3+370+97=
70+94+206+30=
81+(433+119)=
96+(65+104)=
485+15+184+16=
2+48+498+152=
131+92+8+169=
319+181+97+303=
179+59+41+221=
281+(294+219)=
647+53+175+25=
410+68+32+90=
453+247+37+63=
41+168+32+59=
379+221+4+96=
272+(29+28)=
255+(362+145)=
134+12+566+188=
190+43+257+110=
66+662+38+134=
227+(232+273)=
181+(96+119)=
10+(752+90)=
93+207+493+7=
162+283+17+138=
240+6+194+460=
478+6+222+194=
64+336+181+19=
423+117+177+83=
68+(848+32)=
344+20+380+56=
12+(150+188)=
357+(237+143)=
86+(211+314)=
146+148+152+254=
56+447+44+153=
156+(158+444)=
87+(550+13)=
80+162+520+38=
117+(319+383)=
112+(568+88)=
589+111+46+54=
293+18+182+7=
83+92+8+317=
538+62+193+107=
536+(45+164)=
185+415+76+24= 92+340+260+8= 168+532+52+148=
192+126+408+174= 18+48+282+152= 476+210+24+190=
66+393+34+407= 334+(279+166)=
99+101+229+371= 178+(30+122)=
13+287+61+39= 23+(372+277)=
388+312+82+18=
502+141+198+59=
295+80+20+405=
23+(55+177)=
33+345+455+67=
159+303+197+41=
126+(448+74)=
145+344+56+55=
133+(216+467)=
423+(113+177)=
48+114+152+86=
561+(223+139)=
208+392+31+69=
189+111+295+205=
11+27+389+73=
162+21+438+179=
40+(447+60)=
195+336+205+164=
261+39+7+93=
152+106+194+48=
63+14+86+37=
575+125+85+115=
182+26+74+318=
243+36+457+64=
36+117+83+64=
392+208+92+108=
499+(70+201)=
130+170+31+69=
88+(615+12)=
51+(520+49)=
309+162+391+38=
88+(407+12)=
131+169+559+41=
50+(62+250)=
530+(98+170)=
471+180+29+120=
287+57+113+443=
172+228+28+72=
84+(405+16)=
107+393+73+227=
27+411+73+189=
14+69+686+31=
471+(282+229)=
694+(223+6)=
18+(93+382)=
197+42+503+158=
312+171+188+129=
22+42+158+478=
9+(382+191)=
188+186+14+312=
161+257+143+339=
52+(589+248)=
177+156+44+23=
190+423+110+177=