应用加法交换律和结合律简便计算练习 下载本文

388+108+92+212= 393+(494+107)= 88+165+612+35= 389+261+111+39= 142+(164+58)= 16+(411+84)= 372+162+28+= 12+51+88+149= 19+(231+681)= 530+(125+70)= 133+267+250+150= 271+153+129+347= 203+71+29+197= 378+322+97+103= 20+(644+80)= 363+171+329+37= 526+74+16+184= 102+(99+398)= 534+66+70+30= 187+198+2+513= 99+644+56+1= 185+387+315+13= 259+(456+141)= 294+72+106+28= 600+45+100+55=

184+63+137+516= 133+160+140+267= 447+(493+53)= 372+28+199+1= 81+285+515+19= 336+192+8+364= 165+(476+335)= 676+24+94+6= 100+114+100+386= 280+(331+220)= 44+42+56+358= 178+(129+422)= 18+63+682+37= 255+(101+345)= 165+(528+35)= 191+(302+309)= 314+150+50+386= 98+202+25+75= 74+17+683+26= 163+187+113+337= 63+72+237+28= 105+17+83+195= 136+64+265+435= 162+117+83+438= 53+459+47+241=

315+(425+85)= 501+99+70+30= 17+183+301+399= 13+179+521+87= 53+438+47+162= 357+195+243+5= 618+(185+82)= 254+90+346+10= 80+(248+20)= 507+93+79+21= 26+(774+174)= 99+(239+201)= 55+(788+45)= 470+144+56+30= 59+495+5+141= 238+30+170+362= 385+15+16+84= 137+363+148+52= 222+478+112+88= 43+3+57+297= 115+93+185+7= 198+159+41+402= 241+100+500+59= 374+40+260+26= 48+74+26+552=

390+69+431+10= 15+291+385+109= 438+168+32+162= 380+(60+320)= 20+80+7+293= 31+354+69+46= 27+132+273+68= 322+(507+78)= 110+72+90+428= 483+67+233+117= 230+74+326+170= 4+96+46+454= 228+12+472+88= 518+(154+82)= 30+270+262+38= 175+88+212+425= 153+(27+147)= 491+35+65+209= 12+(665+88)= 35+96+365+4= 46+204+154+496= 221+79+547+53= 413+48+87+52= 422+17+83+278= 142+(485+58)=

22+78+238+62= 74+(188+126)= 243+51+157+249= 90+95+5+410= 10+290+451+49= 167+33+289+311= 74+18+426+82= 324+35+65+276= 444+30+156+170= 257+43+496+4= 28+72+583+17= 123+(447+177)= 456+8+92+144= 5+70+230+95= 634+66+76+24= 696+(115+4)= 338+38+62+62= 190+110+334+66= 110+360+190+40= 39+(803+61)= 54+246+439+61= 214+(101+86)= 80+21+420+379= 183+317+145+255= 133+67+136+64=

315+89+11+285= 580+20+22+78= 184+95+5+216= 125+159+375+41= 159+429+71+41= 145+189+11+455= 499+(68+201)= 258+60+140+42= 307+(9+393)= 32+538+62+68= 150+(454+50)= 79+450+50+21= 625+(223+75)= 166+81+419+34= 496+292+8+104= 389+(301+111)= 397+38+62+203= 275+141+59+325= 49+51+301+399= 287+(233+313)= 259+41+67+33= 55+45+229+271= 173+(289+527)= 53+84+147+616= 476+3+124+197=

+214+67+333= 438+162+130+70= 319+381+25+75= 107+(28+393)= 265+30+35+370= 177+9+123+291= 556+(2+44)= 181+(391+319)= 9++14+391= 396+350+50+4= 11+41+659+89= 25+(324+275)= 62+38+121+79= 284+16+46+254= 104+(450+396)= 49+51+319+381= 194+5+95+6= 557+63+143+37= 86+(784+14)= 356+189+11+344= 118+93+82+607= 37+563+181+19= 315+(211+385)= 605+(263+95)= 89+249+111+351=

98+(159+2)= 361+339+76+24= 16+84+61+539= 463+92+8+137= 100+114+100+386= 368+(1+332)= 167+233+61+39= 211+327+173+89= 367+(421+33)= 565+135+136+64= 271+226+74+329= 56+44+259+141= 250+36+150+264= 286+142+158+314= 188+(457+112)= 293+107+88+12= 438+38+62+162= 372+50+50+328= 57+214+86+543= 91+209+244+156= 542+12+158+88= 100+(513+200)= 64+36+37+63= 63+37+364+36= 27+(441+73)=