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1、(1) 989 -423 =(2) 279 - 182 =(3) 433 + 726 =(15) 792 + 146 =(16) 231 - 108 =(17) 952 - 726 =(5)602+ 196 =(6)720+ 332 =(7)445+ 251 =(8)959+ 495 =(9)980-412 =(4) 691 - 155 =(10) 422 + 360 =(18) 165 + 241 =(19) 471 + 185 =(20) 395 + 291 =(21 ) 357- 182 =(22) 759 + 450 =(23) 851 +468 =(11) 292 - 255 =(1
2、2) 539 - 531 =(13) 952 + 234 =(14) 335 + 441 =(24) 939- 155 =(25) 488-257 =(26) 879 + 667 =(27) 482 - 285 =(28)393 -208(29)952 + 249(30)966 -252(31)690 + 762(32)794 + 532(33)360 -224(34)877 -482(35)703 -560(36)788 + 459(37)335 -277(38)898 + 184(39)377 -124(40)122 + 160(1)699 -547 =(2)171 -+ 106 =896
3、 -478 =348 -+ 222 =(5)343 -138 =(6)494 -370 =(7)981 -643 =(8)631 -399 =(9)826 -+ 140 =(10)483 + 911(11)453)+ 203(12)995 + 912(13)544 + 935(15) 284 - 154 =(16) 989 + 449 =(17) 573 + 909 =(18) 951 -278 =(19) 952 + 748 =(20) 953 + 679 =(21 ) 480-460 =(22) 210 + 524 =(23) 513 + 566 =(24) 214-205 =(25) 7
4、89 - 650 =(26) 138 + 917 =(27) 750-181 =(14) 451 - 142 =(1)559 + 514 =(2)624 -544 =(3)849 -494 =(4)893 -493 =(5)322 -311 =(6)384 + 325 =(7)486 -145 =(8)713 -314 =(9)890 + 779 =(10)141+ 769(11)869-462 =(12) 642 - 240 =(13) 657 - 506 =(14) 358 + 仃3 =(26) 546 - 447 =(27) 726 + 369 =(39)(40)(1) 134 + 94
5、7 =(2) 383 + 412 =(3) 488 + 890 =(4) 705 + 666 =(5) 574 + 593 =(6) 506 - 355 =(7) 313 -200 =(8) 771 + 193 =(9) 761 +295 =(15)670-409(16)209-125(17)235+ 737(18)243+ 589(19)573+ 544(20)234+ 608(21)156-101(22)337-189(23)409-191(28) 893 - 520 =(29) 682 - 568 =(30) 412 + 721 =(31) 513 + 679 =(32) 961 + 5
6、46 =(33) 853 + 370 =(34) 171- 117 =(35) 888 + 601 =(36) 265- 121 =(26) 720 + 215 =(27) 179 + 214 =(15)146-128 =(16)899+ 393 =(17)744+ 727 =(18)669+ 162 =(19)358+ 215 =(20)844-287 =(21)994-510 =(10)144 -106 =(11)777 + 867 =(12)349 -230 =(13)558 -421 =(14)309 + 308 =(1) 350- 181 =(2) 855 + 995 =(3) 61
7、2 - 379 =(4) 875 + 990 =(5) 451 -205 =(6) 611 - 480 =(7) 612 + 623 =(24) 844 - 271 =(25) 639 - 536 =(8)900 +655 =(9)555 -317 =(10)833-752 :(11)279+ 752(12)422-237 :(13)833-171 :(14)859+ 734(22) 385 + 899 =(23) 126- 110 =(24) 223 + 461 =(35) 555 + 924 =(25) 432- 184 =(26) 134- 119 =(36)986 -486(37)580 -181(38)620 -428(39)130 -128(40)446 -186(27) 528 + 185 =