问题
解答题
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答案
160×40=6400, | 210÷70=3, | 450÷50=9, |
560÷80=7, | 360÷90=4, | 360÷40=9, |
320÷40=8, | 140×50=7000, | 632÷70≈9, |
809×89≈72000. |
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160×40=6400, | 210÷70=3, | 450÷50=9, |
560÷80=7, | 360÷90=4, | 360÷40=9, |
320÷40=8, | 140×50=7000, | 632÷70≈9, |
809×89≈72000. |