沪教版二年级数学下册计算题专练15

1、67-1"2=32+4+4=800-200=980-300=3X4X4=90N700=52N280=206 14升 25 仁1" 3+2=500-300=990-440=42计 294 177=50计800=30N120=30*61+339=765+466-665=700-400=760-160=164 23升238=628 584 54=14计300=20拼33+267=22M152-220=64计363-240=210-120=25计 21计 145=617- 594 75=36计667-167=4384-65+235=67拼436-37决574316-272=604-

2、154-446=51计 30* 87=937-27a 35=33抖929-629=8X6+2X6=7104474-510=44斗413-143=93817-283=24X3=76118拼 27=25件883-183=7X8+2X8=5X34X3=626-214-626=740-63-337=17<5=20X3=3504-695-295=3X9+6X9=9X56X5=98 8X9=865-149-45 仁14X6=26X6=4X2+3=2X6+5X6=8X53X5=82- 4X2=45+12+3=26X7=17X2=4X4+5=36 4+33=4X73X7=86- 9X2=3升 1&quo

3、t; 3=35 5-2=21X7=6X9+2=1" 3+50=80-15-3=68 3X4=52+4" 7=1决 6-3=3X5X5=9X2+7=8+4+75=41- 20 4=16 2 +4=75+21+3=3g 5 -5=2X4X2=20计300=27-9+69=146A 7=36 3+4=500-400=63 7-8=4X3X4=20N600=52计140=60- 7"9=5g 5+2=1000-600=530-220=4X5X6=30N500=21N290=14升 12计375=14a21a258=74" 27N 29=15计799-699=7X

4、2+5X2=992449Z592=79件303-49仁863-176-124-10X2=925-26计 41=44N438-1 38=4X4+3X4=8X2-5X2=586-258-286=985-116-284-29X 5=24X2=11在498-298=4X3+6X3=3X4-2X4=95- 3 X2=65%148-152=23 X6=10X 6=2X2+5=3X6+8X6=6X3-3X3=83- 9 X5=65+14-2=17X 9=10 X3=3X4+6=24-4+72=9X9-3X9=52 -3X 8=6务168=81+9-5=24X8=5X9+9=1决 9+71=8181 +9=8

5、5- 8 X5=27+1仆 7=40 8 -4=4X5X5=8X3+9=63勺+40=44-36 6=40 5+2=72+2&4=8+4 -2=2X3X6=80计600=15 5+86=40-28 7=4决 4+4=500-100=25 5-2=3X4X6=90N100=61计330=98- 4"7=24+4+3=400-300=430-270=3X3X3=70N600=61N100=30斗 10件 199=3" 4+2=900-400=350-120=64斗 21升 58=50计 100=25N 710=14务 8计 315=84升202-74%1000-700=

6、140-110=46抖27打23行738-19N 52=76计190=20N 11*390=84抖337-846=321-M62-12仁190-70=36N16* 140=753-39抖 43=15计222-122=29务 11计 190=124499-122=59务432-39先669-100-400=31升22升28仁933-34抖15-234845-145=3X3+8X3=4904476-190=71拼136-518=930-63-23728X 4=3X2-2X2=42 -4X 6=5务 56 7=20 5-1 =20X7=3X3+7=45 9+73=77-63-7=1006X 4=13

7、+2仆 8=8+4-2=3X5X4=6X4+9=18+6+10=77-18 6=60 4+3=81+27-9=14+7 1=4X2X5=70计100=28 7+15=82-27 9=2什 4+3=300-200=4+2 -1 =3X3X5=30N800=38计290=34-305=5g 5+2=1000-600=350-230=2X4X5=60N800=25N640=41620+280=644+4=400-300=490-180=36623升23用50计900=13N720=39 件 17抖 124=99升106-99%200-100=500-210=67N 184 24=774-19务20=

8、83计 110=18升 17 什 129=33计378-335=445+423-145=810-730=44升 21N 51=85*28拼 34=28升715-615=25计 85+315=15抖172-156=94计319-645=703-115-385=16计27计 23%645-29斗 48=27件636-136=5X9+6X9=11计395-116=394346-292=990-100-300=29X9=879-19讣 20=464482-482=5X5+2X5=6X53X5=64计149-340=665-51449=17X 9=24X9=36升385-185=2X3+7X3=7X54

9、X5=40- 8 X4=789-11 J189=16 X9=21X 5=6X8+2=2X8+3X8=5X8-3X8=100-9 X3=34+16+2=25X 6=29 X3=4X3+2=6+2 +33=5X6-3X6=82 -2X 4=8升 36 9=16 2-2=13X 4=3X7+2=4决 6+44=79-48+6=3X4X4=10N600=48N110=481+15计345=122 2+2=300-100=420-20=376 154224-40计800=85N120=49张 5务446=11*399-1仔1000-300=980-310=20抖15429行973-29 什 18=63计

10、260=27张 13抖262=44N408446=855+455-255=390-70=53计 26a 65=610- 424 1%20升 63A 63仁32a93+207=88件487-88仁40升429-309=733-178422=25计25a 147=859-47拼 19=19N229-129=6X4+2X4=575+477-475=17务307-174=999-134-366=20X8=614-25讣 45=41升855-755=3X6+7X6=5X8-2X8=851-M42-65 仁779-127-373=27X 4=28X 2=1804435-135=9X5+6X5=4X5-3X

11、5=66- 9 X3=787-193-307=27 X3=23X 2=3X6+5=6X4+2X4=3X9-2X9=51- 8 X6=59+32+8=28X 9=17 X3=4X6+2=30 5+18=5X2-2X2=95- 6X 9=4计 45 5=16 4-1 =23X 5=8 X5+6=20 4+72=28 56-8=73- 3 X4=69+ 1O 2=1决 3-3=4X3X3=4X7+8=16+4 +79=47-18 6=48 4+4=20+8+2=63+9 -7=5X5X3=80计200=36 6+68=60-1" 3=50 5+2=600-100=35 7-5=3X3X3=

12、80N100=450+410=83- 6+2=12+3+2=900-600=110-30=2X2X4=40N600=67N150=292+48+452=644+4=900-600=200-50=50务 25计 196=79计116-495=980-19717=40计109-305=301+165-165=725-16-484=4X4+6X4=26X 6=9X7-4X7=19X7=70- 6 X7=3X2+3=38+366=81+9+24=27-9-1=56-357=4X4X3=80 4+4=80计800=1000-600=89计 110=170-70=14斗 147 35头221+20什 17

13、9=697-200-49%920-19计 70=31N364-310= 154810-110=804-163-33%3X6+6X6=29 X3=4 X2-3 X2=28 X7=92 -2X 8=6 X4+3=15+1" 6=72+9+44=8+4 -2=72 -15 5=3X2X3=6g 4+3=20N900=300-200=38N180=340-200=34计37+363=54N 26计 60=23务106-134-775-48拼 13=904225-40%27计926-226=752-15"449=6X7+3X7=22X 3=6X8-4X8=28X 2=82- 9 X8

14、=9X7+7=9计 14-2=35 5+56=4决 6-3=17- 40 8=3X2X2=1" 2+2=40N400=800-600=48N330=620-170=334 4升25731抖 10张284-12抖324-126=826-54421=15斗458-15於184204-204-69"130-270=4X5+4X5=27X 8=6X4-3X4=18X 8=90- 8 X6=8X5+4=83+25-5=3" 8+85=24-4-2=20- 21 +7=5X3X2=1" 2+3=60计700=500-300=76计120=580-320=32升 12

15、* 27%391+274 109=951+220-65仁857M8拼 31=82计192-620=16a698-298=967-16" 139=7X2+8X2=16X 3=7X5-2X5=28X7=7X7+2=328+43=12-15-5=16-8X2=21+1&2=168-2=5X2X2=8X8+6=16-2+78=1781-9=4 片 3+4=37+357=28+71=3X2X2=70计700=6 卡 9+89=58-355=162-4=800-400=2&4-1=3X3X5=700500=31计590=54-408=48+4+4=600-200=950-40=2

16、X3X6=300700=110390=242100200=405-4=200-100=400-130=34 计 22 升260=2004400=630180=16211318799+40599=500-100=180-150=52924071=96738922=4804-280=31 478+422=94011 "40=560215560=600-160=410163190=946-38拼 42=17升868-668=32590+310=460306-460=96628966=859-156-344-56计14 * 37=816-57458=413843443=2X7+3X7=25计

17、399-258=886205886=812-69-43仁21X5=960-57在17=11 303303=6X2+8X2=5X23X2=8184-286-218=846-91-409=16X2=21X4=2804-60103X7+8X7=9X68X6=52-6X3=852-35565=23X3=21X8=4X4+2=4X447X4=6X63X6=52-2X3=27+497=27X4=20X8=6X9+4=14-2+74=6X55X5=51-2X8=7升6卡7=8+23=10X8=4X7+8=2 - 3+17=58-6+3=46-2X6=79+1 "4=1 决 27=2X3X2=24-

18、4+2=800-200=340-300=49计 15务 110=60计700=61N220=19拼 10计395=78计320-385=900-200=480-320=57拼 24升 22=719-24斗24=64计 190=25425+475=14抖454-146=94计287-340=400-120=54411计 58=652-17N18=14计952-152=28务 10*300=38拼118-188=21计397-115=686-33-56%566-20升 13行618-24什26=31斗255-255=4X4+2X4=251+187-25仁89斗492-89於640-33-46726

19、X 3=986-30计 1447拼929-429=3X4+6X4=4X2-2X2=69升17A39头972-33-46%15X 5=25X 7=17计 113-11至8X6+8X6=6X6-5X6=36- 4 X9=695-174-426=12 X4=13X 5=4X4+3=7X8+6X8=3X9-2X9=70- 6 X6=63+12+2=17X 2=28 X6=7X5+2=3" 4+40=7X2-5X2=47-8X 5=6升 1" 2=8+4 1=26X 9=6X9+7=1什 7+24=14-16-2=59- 7 X4=37+1" 2=25 5-5=2X4X3=

20、7X 8+4=32+8 +5%65-1" 6=80 5+4=69+486=32+4 1=3X3X6=10计500=7" 8+11=73-54 9=仔 2+2=800-200=14-2 -4=4X4X4=20N600=430+440=57-486=12+2+3=400-200=340-180=5X5X4=90N500=16N130=33斗 14计 155=3" 4+2=800-500=470-460=45619444=30计 100=35N620=344 19张206=731-M35-73仁9 1 9-440 21=31474354头8X4+2X4=9X9-5X9=

21、873440 卜 77头636-192-108=26X 3=24X4=15计350-250=7X6+6X6=3X7-2X7=26- 3 X8=755-25-275=11 X4=27X 6=3X3+9=3X9+5X9=3X8-2X8=35- 2 X3=15+81 +9=26X 7=29 X3=3X5+2=1" 3+81=3X6-2X6=977X 9=7升 30 6=63 9-2=26X 2=9X7+8=25 5+40=25-42+7=96- 4 X6=12+3" 4=4A 7-2=5X5X5=6X3+7=18+3 +78=26-18 6=30 3+2=21+5A7=25+5

22、-4=2X5X3=50计300=20 4+43=75-仔 4=仔 2+3=500-200=15 3-3=4X5X4=10N600=87计120=70- 6+2=6g 4+3=800-200=910-710=3X4X4=30N100=29N530=47a32+368=48 4+4=800-100=680-80=32计 24 件272=4004-600=18N130=33升 12N280=156303156=1000-800=990-520=40411升 98=72X3升 16=13计730=23拼15打34行174469-172=8664409-666=900-740=31打 14 什284-8

23、30-29务 6附33务194-194-145-21+379=37计433175=81抖338-716=877-114-486=35升24讣 41=94316什21=25抖899-599=9X3+3X3=848441%548=67拼148-278=902-134-466=14X2=856-58计 29=20斗895-595=7X5+4X5=9X9-8X9=91 件 1571U970-28-472=15X 3=21 X8=1 7-8X2=69+18 6=64-8 8一2X2X3=9X9+3=14+7+10=79-18 6=40 5+4=87+4"7=15+5 -3=5X5X5=30计9

24、00=20 4+62=83-20 5=45 5+3=300-200=6+21 =4X5X4=50N200=50计170=1 2-364=16+4+2=900-600=870-290=3X2X6=70N600=55N160=14斗 184 218=4> 5+3=500-300=560-430=44升 27升 57=70计200=72N270=28抖 9计202=51计 31" 210=500-200=910-670=49412斗 108=878-29升21=49计210=49*27+373=704374-30%29计247-195=580-550=37 件 27计229=639-

25、27务35=37计584-584-24计 18 什 219=46张456464-50升482-309=863-13636附11计 21a290=625-24计21=28N124-124-5X2+4X2=891+28/79仁86升273-669=985-169-33仁18X 8=610-17计65=17务294-194-5X2+8X2=4X3-2X3=651+144-15仁630-172-328=16X 5=22X 9=27计38A38仁9X3+2X3=5X5-3X5=812 X2=604-198-202=17 X3=26X 2=4X4+4=7X3+3X3=9X6-8X6=91- 8 X3=76

26、+4g5=20X2=22 X5=8X6+3=1O 5+27=3X7-2X7=88-5X 2=1升 45 9=63 9 -4=14X4=6 X2+3=5什 9+27=84-72+8=58- 8 X6=61 +28 4=3" 8-3=3X4X6=5X4+8=8+2 +22=96 63 9=60 5+4=90计200=72N120=35拼 84 218=20务306-204=200-100=490-400=374 18斗 23=843-17升 36=90计100=41N22+278=16抖315-166=489+43"389=400-90=35r 15计 24%856-59拼42

27、=236935-135=2664"61+439=76N319-260=67 件465-17仁685-16-484=20升21计29仁923-57斗50=28务796-596=5X6+3X6=846449 卜446=664263-26%682-137-36於19X3=81X2拼 18=38务526-426=6X5+8X5=7X7-4X7=53计165-430=893-192-108=27X 6=23X 3=341+69 卜 49仁9X6+7X6=6X3-2X3=88- 3 X8=693-148-452=28 X7=20X 3=6X2+9=5X5+4X5=9 X2 -6 X2=96- 2

28、 X7=44+1g2=17X 5=10 X6=3X7+6=14-7+63=3X8-2X8=37-8X 3=8升 7" 8=15 5-1 =11 X9=7X6+2=15 3+20=30-16-4=50- 8 X5=17+6A 9=9+3-3=3X5X5=7X4+5=12+6 +56=99-45 9=3" 4+2=16+168=15+5 -3=5X2X6=900+400=9+3+2附38-36 4=1" 3+2=200-100=56 8-5=3X3X6=60N900=18计220=89- 4"7=24+4+2=300-100=530-240=4X4X3=70

29、N600=72N240=251+14拼352=644+4=200-100=830-100=39升22N10仁80计300=87N130=41张 94308=821+389-12仁900-300=210-160=46升17计13仁719-29计76=23升153-239=750-185-415=28X 2=24X6=391+896 194-6 X4+2 X4=5X5-3X5=60- 6 X8=64810-290=10 X4=14X 4=4X5+4=8X9+2X9=9X3-5X3=26- 5 X5=62+63-7=15X 5=16 X2=5X5+6=36 4+13=3X3-2X3=61 -2X 9

30、=34 7" 8=1O 5-1 =27X 9=9X6+7=2什 3+82=84-24-4=88 9 X9=75+4g 5=2什 6-3=5X4x6=2X4+5=1g 2+11=68 36 6=40 5+2=47+147=72+8 -4=5X2X3=400+400=36 9+30=79- 8+4=2什 4+3=600-500=16 2-3=5X5X3=60N600=77计100=33-364=5g 5+2=700-400=740-60=3X4X5=80N500=79N130=19681+319=24-3+4=500-300=280-130=33升17升16员20计200=82N100=

31、43411升 18仁80计 11 卜608=800-500=660-650=20升12拼19仁94118拼 47=33计550=33张 19什206=22* 168 12头57升207-279=510-60=25斗 23* 24%617- 43415=30计705-205=23斗 19*204-24务172-244-634100-432=825-78322=50619计 19行874-28计 12=19张558158=2X5+4X5=5584427-158=55务336-45先728159-14仁16X 7=675-39 什 16=47拼590-390=9X5+3X5=5X6-3X6=14计3

32、89-146=818123-37%26X 3=16X 3=42升130-130=7X8+7X8=3X8-2X8=84-5 X7=2X6+6=8升 1>5=24-8+77=9+3 -3=81126=2X2X5=30 5+3=50(H40(0=1000-500=81计 110=640-430=16斗 11* 184=36斗 14*238=48755-387=873-38计 12=29务207-294=29134-602-302=906-72-328=7X8+5X8=17X 3=9X6-2X6=21 X2=65- 2 X5=7X 5+4=14+1"4=48+6+83=4+2 -2=4

33、6- 4+2=5X2X4=45+5+3=20N400=800-600=44N 510=160-40=334 17计225=53拼 27拼 162=41N396-210=773-49存24=87升279-379=274638-338=732-138-462=9X4+7X4=14 X9=6X9-4X9=20 X8=90- 5X 6=3X9+8=83+186=8+2 +27=24+3 -3=80-45 5=4X5X2=仔 3+2=20N300=300-100=70N190=120-90=41拼 174128=39N 12计204=71升243-119=936-19什55=14抖229-146=27务

34、214-214=922-78-522=5X2+7X2=25X 2=7X4-2X4=13X 5=36- 8 X4=7X7+7=2计 16 4=45 9+83=5什 6-2=38-45 5=4X2X2=1" 2+3=50计800=900-500=39计290=420-250=49计15+285=14计 16件252=88升204-789=867-19斗 26=34升380-349=16计115-115=916-137-263=6X9+9X9=25X 7=5X2-4X2=26X 7=46- 6 X5=5X5+4=78+24+8=48 8+39=28 7 -4=32-24-8=5X5x4=2

35、0 2+2=50计200=800-100=720-250=41升22428仁875-39拼 2g75计 1 10=26张 14计 154-13件457-13仁41布68- 414-910-80=46 件 20升 139=932-48N 48=36计270-270=33升15计24先88斗400-28於15斗490-15於625-169-23仁12计 10拼280=78" 29存 16=18拼368-268=4X6+2X6=281+350-28仁384100-382=78" 187- 3仔21 X5=613-57 什 58=35计610-110=6X3+6X3=8X76X7=

36、9024478-102=858-16-484-21X 9=14X2=36张76A76仁5X3+9X3=3X2-2X2=75- 4 X6=837M6- 35先16 X5=18X 3=8X8+7=4X4+9X4=5 X2 -2 X2=83- 5 X3=32+16-8=14X6=23 X3=8X3+4=18 2+81=5X5-4X5=63-3X 9=34 4+2=49 7-5=13X 9=3 X2 +4=35 5+29=16- 2g4=49- 6 X4=59+54 6=仔 4-2=4X4x3=3X6+4=8+2+3420- 4+2=30 3+2=63+357=4+2 -2=5X3X6=60计700=

37、63 9+7488-20 4=80 4+4=600-300=7" 9-8=3X5X6=70N600=45计310=63- 3"8=16+4+2=700-300=660-340=2X2X2=30N300=67N260=31计18升31仁75 5+3=800-700=330-40=68a 29N18=10计900=76N120=124 1务386=21计340-118=800-300=540-500=31计 234 85=733-15斗 20=76计220=35*68+332=86拼464-468=23计110-235=40*78-178=8X2+8X2=9X7-5X7=57-

38、6 X4=83% 15285=21 X3=21X 4=5X8+7=8X7+8X7=4X3-2X3=76- 7 X4=16+63+9=13X 3=17 X3=3X8+9=56 7+83=6X4-5X4=47-3X 4=2计 3" 4=20 5 -4=15X 9=8X5+9=4A 7+80=26-27-9=96- 7 X4=42 +18 9=15 3-1 =3X4x5=2X3+6=36+6+15=67-24-3=60 3+4=17+255=45+9 1=5X3X5=60计200=16 4+89=51 -49 7=2什 4+2=300-200=16 2 -4=4X5X2=70N200=78

39、计170=75-24-4=8+2 +2=1000-700=520-80=3X2X2=30N900=65N220=48621+479=16 4+2=200-100=630-50=52升11拼17女50计 100=13N260=33斗12427头38计214-28五800-700=500-380=25 件 29斗249=977M8拼 11=87计120=48 件 11件289=85拼455-358=87计105-57五600-70=27斗 20件 22%915-36升5附43升 69A 69仁12计 14什256=57升332-179=464 25A 16%829-60-540=11 件25 件2

40、89=836-48存51=42斗402-402=6X4+8X4=68249382=96N175-660=892-146-354-12X 3=868-39计 22=29N11卜 11仁9X6+3X6=4X2-3X2=22a220-222=708-25-375=20X 7=13X 6=31升305-105=2X6+2X6=9X4-8X4=70- 4 X5=613-77-223=12 X7=11X 3=8X5+9=77+1 O5=18+6 -2=3X4X3=30计500=3" 4+14=87-18 2=36 3+4=300-200=1&9 91=2X4X4=50N100=43计34

41、0=99-24-8=24+3+2=900-400=320-290=4X2X6=20N300=11*700=16升32+268=16 2+2=900-300=790-300=31升12拼28仁3004-600=83N110=474 18拼 312=76务203-464-200-100=520-160=67张 13务 26=764-39斗29=31计210=27抖38+262=35抖478-256=215+465-115=560-220=24429件25头822-44计23=17计162-162=42升 19* 310=67斗445-57於31N472-310=634-65-535=45计 13升

42、250=74a 57计 34-36务568-368=3X5+6X5=141-M98-14仁71N443-510=959-100-200=18X 4=63155 什 20=19升496-396=3X6+7X6=5X4-3X4=831+165-33仁866-87-413=28X 4=16X 9=20计293-19於4X5+3X5=8X9-4X9=85- 2 X6=670-99-40仁27 X5=29X 4=2X9+6=8X5+5X5=3X8-2X8=85- 4 X5=76+54-9=25X 8=15 X6=5X9+9=24-8+64=5X4-2X4=74-9X 7=5升 63 7=24-3-2=2

43、8X 3=7 X2 +4=16 4+19=44-408=87-2 X6=64+1O 5=40 5-1 =5X4X2=9X6+8=12+3 +39=47-24-6=18 3+2=62+405=8+4-1 =4X5X3=40计800=6+3+40=14-28 7=30 5+2=300-100=56计170=35打 13 什 169=11升404-119=27计 107-17五290-60=35422计24头884-29务 10=33计293-29五41升 19a308=68务487-484-77务142-174-729-190-410=281+27* 119=712-54拼36=45件713-4仔

44、8X9+7X9=436346-336=86拼 14"268=982-46-45414X7=979-49< 15=454 197-19%7X9+8X9=5X4-2X4=496332-196=699-135-365=15X 7=10X5=2184486-386=3X4+8X4=3X2-2X2=64-8 X8=797-89-41仁18 X3=21X 2=4X6+8=5X9+8X9=7X5-6X5=56- 3 X8=16+18-3=15X 6=19 X6=6X8+2=1" 2+55=5X5-2X5=23-4X 5=64 35 5=1" 2-6=24X4=5X7+2=

45、15 3+85=66- 4+2=712 X9=72 +1" 4=35 7-2=5X5X6=9X 7+4=64+8+32=56-16 2=48 4+3=81+426=18+6 -3=4X2X6=50计700=63 7+33=98-6+3=2什 3+4=400-200=18 3-3=2X5X4=20N700=43计160=92-426=3g 3+2=300-200=440-190=5X4X4=60N700=59N130=25升 13务266=10(H5+4=300-100=270-30=58升 10斗 13=6004400=82N150=15计 19N 210=44计104-448=10

46、00-800=620-10=35抖16拼14先666-38斗17=61计280=32斗 19抖 102=344297-34%21升 28A 11%650-430=48411计 18=778-59升21=200+439-439=75%128-272=8X9+9X9=12X 5=8X2-7X2=24X2=99- 2 X2=6X3+8=3升 54-6=3" 8+43=8+4 -1 =29- 6+2=5X2X2=45 3+3=60计300=900-500=50计 130=920-140=44计 10a 198=361+28计 139=10计384-105=969-38斗 144824-258

47、-482=451+95 卜 15仁751-122-278=4X4+7X4=14 X6=6X5-2X5=19 X5=96- 4X 8=7X3+9=87+2仆 6=35+5+38=27+3 -6=86-35 5=3X5X3=3g 3+2=50N600=600-200=66N320=840-160=37N45+455=23 件 26计 169=24计292-145=62" 46* 42=54务174-544-194523-32於626-114-486=9X8+7X8=16 X8=9X5-3X5=10X 6=96- 9 X9=5X6+5=7计 4" 6=2- 3+50=7"

48、; 8-2=78- 3" 4=4X3X5=40 5+2=10N600=300-200=69N150=350-260=16抖 84 218=28斗 20N 21%274190-172=723-25拼35=39斗460-39於17斗282-282=87" 185- 315=4X6+2X6=22X 6=6X8-3X8=29X 9=70- 2 X9=5X8+6=49+45-5=64-8+89=14-7-2=23-27-3=5X2X6=24-3+4=80计500=400-100=81计120=670-560=40计36+26附14张 13件256=83升133-439=824-354 28=40斗384-402=47务185-185=930-138-262=6X6+5X6=10X4=5X5-3X5=28X 5=87-7 X9=4X2+6=31+126=81+9+66=312介 6=4决 4+4=3" 4-5=3X5X6=80N800=29- 7"