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1、四年级数学下册口算练习题1605=1370=1706=50050=13020=3007=2703=4402=68040=220270=4250=60040=28030=3502=50101=2506=7200+900=410-201=20030=42040=180090=8007=18030=10370=40040=1608 0=13020=27030=2083=3052=1456=2408 0=179+98=1550=9050=1330=10360=13870=20160=26030=1685=1306=13650=24030=18250=4052=15470=808 0=5005=1630
2、=3643=1755=1903=2023=2556=4604=2420=3023=48016=1208=2703=560014=24008 0=14020=370206=76039=7600400=60559=240080=10050=120020=25050=7600400=680270=98014=420030=61300=130050=20048=930660=960080=140300=880040=9600800=6840=280270=821-453=934-98=450050=1202=96030=27030=3502=50110=2506=7200+900=753-98=521
3、-97=428+99=527+98=12390=2630=1648=808=2440=7004=1107=9009=2049=15370=1004=7040=2270=5005=28350=1016=2833=38020=2434=16540=90030=270030=27030=84021=84070=10054=123715=3604 0=55050=3260=729+461=509+274=700070=20040=18030=24040=542-197=55050=68017=57030=31230=51450=6452=2755=63070=23020=13030=6050=1118
4、=2506=45050=18030=2009=2245=27030=7552=80070=3007=7502=2850=383245=56080=960024=40020=121011=165011=20911=15411=100020=7707=10008=2540=30230=1208=527232=48027=45020=73150=12060=2036=2054=2090=42070=4055=25330=51030=60060=8005=12580=2504=4520=68034=3026=700070=20040=18030=24040=30520=14070=13060=2204
5、0=1045=450050=1202=40030=373926=77639=60559=100025=16060=20420=29030=5714=35270=48130=5734=30023=1268=727232=483277=45020=673315=12060=20360=5128=31070=40014=470180=530280=9200400=84021=40500=800050=190020=200160=8700300=300330=31400=700014=60012=4037=3024 0=1494 0=4008=2125=10004=1046=1075=1037=540
6、60=13530=3007=3035=1933=3035=1458=4820=31230=24040=5607=27030=84021=72090=77070=10054=12315=3604=55050=30520=1407=1036=2803=2083=702+98=36090=2630=1504=99+424=1430=7005=7852=2564=3330=1038 0=5020=2537=3255=7463=2230=81090=40042=4820=750290=5490=76020=7500500=370200=65013=86004200=2404=64080=10510=10
7、211=16030=410-201=200080=15650=2033=1225=48080=1465=2703=90015=48040=64016=39030=12490=1603=432+80=13030=1106=7004=3230=1026=45230=24030=1705=9050=3114 0=2560=1085=2404=56080=96024=40020=40030=75025=51017=57019=11022=1258=323-98=532-99=528+97=1503=2602=7526=2140=3520=1580=3006=158=24030=1037=2604=15
8、25=16660=1026=13870=75520=5005=27030=1036=61430=510036606080005240803100050120020250050270902480040=760019=18003=6800=1108=250050=13050=4408=2830=60130=65005=9906=150456080111101211720243200224020701452830561365059006110047911345050122010140504808030601806050803006158233042003090015312299=882256=324
9、092468109025462030402463072302108284003190057204135340209505=20030424460372302013030605030150301055490070213726024753262104035020254018009040127483729108153024920046481624114036006076001901832532022420770142830601365059006104710150326027522201403520158030063158233051030250502103050050280703042015050
10、2103015063120060250406800110825005013051040008 04203013011=14011=50704808026309331121305=4008=42030=9015=1602=4802=5060=484=76019=1083=6800=1108=130306050360204900705070=480080=20630=93031=18004=740037=231030=3620=50001036040505050280705600060800502408011005048080306024030=118 0=12002027090500103604
11、010470=910013=45455=13220=25050=1305=4008 0=4203=590315=3204=92046=648416=132020=1602=48020=5060=4250=12020=5016=17011=156612060254014587224=32002=2420=77014=1140=36060=76019=1963=750290=5490=7620=75050=37200=65013=86004200=2404=64080=15210=10211=16030=7904=2044=4008=2603=56014=2408 0=1420=683445=11
12、14=16515=87029=81027=1602480250604843230330=3140=70014=60012=9608=14030=88040=96080=6130=13050=20048=930660=530280=92040=84021=18050=4804=64016=39003=2420=3230=48016=128 0=2703=20420=29300=81030=76020=76040=680270=98014=42030=9051=10004=2027=2404=76191803268001108112505013054008 0420312906140510289222640014=470180=100025=1660=