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题型:填空题 题类:常考题 难易度:普通
分数的加法和减法(复习)7421 10
=( )
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{#blank#}8{#/blank#} {#blank#}9{#/blank#} {#blank#}10{#/blank#}
+=
÷=
2.8×=
4.01×0.01=
10﹣2.7=
0.22=
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