637+263= 905-896= 600-298= 517-348= 376+284= 427+543=
746+279= 637+268= 200-183= 359-136= 408-57= 725+538=
501+389= 725+538= 301-84= 500-453= 746+163= 726+598=
23÷5= 74÷9= 17÷2= 60÷8= 53÷7= 32÷6=
20÷6= 33÷8= 123×2= 423×2= 212×3= 221×4=
634×8= 681×8= 499×3= 765×7= 508×3= 305×9=
603×4= 406×6= 380×5= 640×2= 450×6= 460×7=
分析:根據(jù)整數(shù)加減乘除法的計(jì)算方法進(jìn)行計(jì)算即可.
解答:
解:637+263=900, 905-896=9, 600-298=302, 517-348=169, 376+284=660, 427+543=970,
746+279=1025, 637+268=905, 200-183=17, 359-136=223, 408-57=351, 725+538=1263,
501+389=890, 725+538=1264, 301-84=217, 500-453=47, 746+163=909, 726+598=1324,
23÷5=4…3, 74÷9=8…2, 17÷2=8…1, 60÷8=7…4, 53÷7=7…4, 32÷6=5…2,
20÷6=3…2, 33÷8=4…1, 123×2=246, 423×2=846, 212×3=636, 221×4=884,
634×8=5072, 681×8=5448, 499×3=1497, 765×7=5355, 508×3=1524, 305×9=2745,
603×4=2412, 406×6=2436, 380×5=1900, 640×2=1280, 450×6=2700, 460×7=3220.
點(diǎn)評:口算時(shí),注意運(yùn)算符號和數(shù)據(jù),然后再進(jìn)一步計(jì)算即可.
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科目:小學(xué)數(shù)學(xué) 來源: 題型:解答題

637+263=905-896=600-298=517-348=376+284=427+543=
746+279=637+268=200-183=359-136=408-57=725+538=
501+389=725+538=301-84=500-453=746+163=726+598=
23÷5=74÷9=17÷2=60÷8=53÷7=32÷6=
20÷6=33÷8=123×2=423×2=212×3=221×4=
634×8=681×8=499×3=765×7=508×3=305×9=
603×4=406×6=380×5=640×2=450×6=460×7=

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