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题型:填空题 题类:常考题 难易度:容易
用8的乘法口诀求商1966 10
7×5-4×5={#blank#}1{#/blank#}×{#blank#}2{#/blank#}={#blank#}3{#/blank#}
①33+26=
②77-45=
③68+24=
④98-59=
⑤71-25-45=
⑥80-56+14=
⑦90-(12+36)=
①80-56=
②62+19=
③45-37=
④56+33-27=
⑤42+17+28=
⑥27+(65-39)=
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