计算:0.6×9.8-2/5×50%=? 9/16×2/5+3/5÷16/9=?
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计算:0.6×9.8-2/5×50%=?9/16×2/5+3/5÷16/9=?计算:0.6×9.8-2/5×50%=?9/16×2/5+3/5÷16/9=?计算:0.6×9.8-2/5×50%=?9/
计算:0.6×9.8-2/5×50%=? 9/16×2/5+3/5÷16/9=?
计算:0.6×9.8-2/5×50%=? 9/16×2/5+3/5÷16/9=?
计算:0.6×9.8-2/5×50%=? 9/16×2/5+3/5÷16/9=?
0.6X9.8-2/5X50%
=0.6X(10-0.2)-1/5
=6-0.12-0.2
=6-0.32
=5.68
9/16X2/5+3/5÷16/9
=9/16X2/5+3/5X9/16
=9/16X(2/5+3/5)
=9/16X1
=9/16
0.6×9.8-2/5×50%=0.6×9.8-0.4×0.5=5.68
9/16×2/5+3/5÷16/9=9/16×2/5+3/5×9/16=(2/5+3/5)×9/16=9/16