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________________参考答案 参考答案 练一练(1) 464399 三百一十三百六工音”先早零六二百五上开3? 7226986116922597!32 92787127914991 167923C319 一手五百二土-三千七百五十二九千零九士993177_672 练一练(9) 二⊥△[640-190619-178-110-378-180198267 177281195146578159220377-230 上千=号一上“六千美兰口108-381/600-930328599388428⊥391-292-394-189-426 404230~758508~1000-5030-2100-3003538378358-2573727717495 86209990731552012017-9065900597384、568499-293、255199164-452 500237104030-98207520379878776-520690310-9201000-750 练一练(2)810900_760990-740-890-550400-700 练一练(3)395°490-125-547580=100360511-24 9004008006800-1000-400-2002000549-420-480-450-895783、515286-447 800_100050030001000100003900107-498-884_211、894-677721887826 10003900-48004000500-2700-10C968668959-748.877-836-859-789-111 1000-400°300-5500-10007500-25007000练一练(11) 4000_5000-6600°600900-500600-600279598456-478-486°338=386-878959 9005000-40060040002000-2100-800465299-383889_697-399-179-279-598 2000800-600-7000-5005000-1000-50067279879289-477-897849-496-269 100080020002000200078001000897213788485468287-879425785 600050002000100004000900-8000798_612695216-442311449251855 100050060004000111845634-830881611626-905816 练一练(4)905612526508816-813-703907-923 140760640590,420280-380-270-70817-170430750150440-950-370840 320640430920-800500-620-95C 160290°330~640-140=4000-4300610练一练(12 270-250°350=450=240=160350-160-440438-111-850320-443-370226-870-348 460500-1405000-640170430-640067°846-458-772-363-227690186201 48018017064060-4700770074006754636348360129 1000-1600°1000-3800-4100-8000-4000781-507117504545560709550 370066001800800080004600540047438462390-350-920-640°850-940 10007500320080006400-20001500180620800-820880-180510-590500 1010100200-55乐(010002000661-701827_643―821344 3600°4000-2100-101000 1600-230°5000-200°80009000-2000-120734545900521952 190°8~5,70-600°970°3000-5500453510354830-743=1001-470-807-732 3040300890﹒8,7501504925-1000=1000-523643736 练一练(6)_943-724-923=800-260=920=190-140-810 801020-30-3、70。66610-110610-270-440-290=540900900910-480 T009-20=2-50-1004130^23006006700460-400730280280190-71