文档介绍：. .
- 优选
〔1〕611-31=〔2〕890-870=〔3〕516-191=
〔4〕808-38= 〔5〕967-702= 〔6〕316-210=
〔7〕483-465= 〔8〕840-479= 〔9〕914-775=
〔10〕933-137= 〔11〕912-894=
〔12〕838-688=〔13〕27 + 46 =〔14〕810 - 125 =
〔15〕92 + 65 =〔16〕90 + 47 = 〔17〕18 + 15 =
〔18〕18 + 53 = 〔19〕29 + 32 = 〔20〕398 - 148 =
〔21〕256 + 775 = 〔22〕449 - 312 = 〔23〕202 – 155 =
〔24〕106 + 537 = 〔25〕916 + 861 =
602÷7＝ 839÷9＝ 726÷6＝ 51×16 ＝
25+32×23 52+18×12 17+34×19
. .
- 优选
〔26〕713 - 288 =
〔27〕954 - 286 = 〔28〕72 + 76 = 〔29〕71 + 68 =
〔30〕64 － 60 = 〔31〕716 - 117 =〔32〕766 + 792 =
〔33〕79－39 = 〔34〕84－17= 〔35〕175 + 157 =
〔36〕38 + 69 = 〔37〕83 － 62 = 〔38〕12 + 98 =
〔39〕808 + 213 = 〔40〕704 - 124 = 〔41〕607 + 914 =
〔42〕645 － 239= 〔43〕648 - 585 = 〔44〕352 + 708 =
〔45〕970 + 602 = 〔46〕860 - 162 = 〔47〕343 + 801 =
〔48〕806 + 487 = 〔49〕691 + 400 =〔50〕56-14 =
78×22＝ 416÷4＝ 823÷8＝ 63×43=
37+16×28 65+11×12 56+37×21
. .
- 优