9.99x2.22+3.33x3.34
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9.99x2.22+3.33x3.34
9.99x2.22+3.33x3.34
9.99x2.22+3.33x3.34
=3.33x3x2.22+3.33x3.34
=3.33x6.66+3.33x3.34
=3.33x(6.66+3.34)
=3.33x10
=33.3
9.99x2.22+3.33x3.34
简便运算(1))99.99X0.8+11.11X2.8(2))9.99x2.22+3.33x3.34
简便计算:9.99x2.22+3.33x3.34怎么算?要写出为什么
9.99x2.22+3.33x3.34的简算怎么做
x2>4是x3
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