2个回答
展开全部
0.22×1.55+2.144÷3.2-0.99
=0.341+0.67-0.99
=1.011-0.99
=1.011-1+0.01
=0.021
=0.341+0.67-0.99
=1.011-0.99
=1.011-1+0.01
=0.021
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展开全部
0.22×1.55+2.144÷3.2-0.99
=0.22×1.55+0.67-0.99
=0.2×1.55+0.02×1.55-0.32
=0.31+0.031-0.32
=0.341-0.32
=0.021
=0.22×1.55+0.67-0.99
=0.2×1.55+0.02×1.55-0.32
=0.31+0.031-0.32
=0.341-0.32
=0.021
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